[sage-combinat-devel] Re: combinat out again?
Anne Schilling writes: > Hi William, > > Since the machine has been down quite a bit and we bought it from the > NSF grant, do you think it would be a good idea to ask for an exchange? William sent a mail to the sagemath-users list saying that Dell will be replacing a faulty (?) memory module in the combinat.math.washington.edu machine, after which "this will stop happening":: > It turns out that indeed combinat.math.washington.edu was down with a > memory error again. I've rebooted it.Dell will also be fixing it > (by replacing the DIMM) this week, so this will stop happening. This > means some downtime (for combinat only) later this week (not yet > scheduled). -Keshav -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
[sage-combinat-devel] Re: combinat out again?
On 2012-12-13, William Stein wrote: > On Wed, Dec 12, 2012 at 11:30 PM, William Stein wrote: >> On Wed, Dec 12, 2012 at 7:00 PM, Anne Schilling >> wrote: >>> Hi William, >>> >>> Is combinat.math.washington.edu out once again? The machine does not >>> seem to respond. >> >> It's not crashed due to a memory error, since it responds to ping >> requests. However, I can't ssh into it, which can happen when too >> many people run jobs at once (and the vm.overcommit ratio is too big, >> and there isn't enough swap). I'll get the sysadmins to reboot the >> machine tomorrow morning, then tighten up the vm.overcommit, and add >> more swap. > > The machine is back up. > The vm.overcommit stuff looks fine -- it's the same settings as on > sage.math, etc. > > Later today, I'm going to add an extra 96GB of swap to the little 32GB > of swap currently there; this should help with stability a lot. it might be GAP to blame, in part, as GAP reserves an amount of swap sort of proportional to available RAM. Now imagine you run 50 Sage sessions, each with an instance of GAP reserving a chunk of swap. I tried to convince Volker on #13211 (comments 186 and later) that this should be fixed, but he didn't agree... Dima > > William > >> >> -- William >> >>> I saw that several people were running heavy computations on it for the >>> last week and until yesterday, everything seemed fine. >> >> >> >>> >>> Thanks, >>> >>> Anne >>> >>> On 12/6/12 10:36 AM, William Stein wrote: Hi, After moving memory around, memtest86 (and the BIOS memtest) detected no errors. If people can try to stress test combinat.math.washington.edu for the next 24 hours (especially with large-memory computations), that would be very useful! William On Wed, Dec 5, 2012 at 3:25 PM, William Stein wrote: > Hi, > > Andrew Ohana and I swapped two chips around and are currently running > memtest86 on > combinat.math. I'll check on the results tomorrow at about noon. > > -- William > > On Tue, Dec 4, 2012 at 10:49 PM, Andrew Mathas > wrote: >> Yes, thank you for taking care of this William. I am sure you have better >> things to do! >> >> Andrew >> >> >> >> >> -- >> William Stein >> Professor of Mathematics >> University of Washington >> http://wstein.org > > > > -- > William Stein > Professor of Mathematics > University of Washington > http://wstein.org > -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
[sage-combinat-devel] Re: combinat out again?
On Thursday, December 13, 2012 10:06:47 PM UTC, Dima Pasechnik wrote: > it might be GAP to blame, in part, as GAP reserves an amount of swap > sort of proportional to available RAM. Right now it basically eats all available swap, this is going to be fixed in #13211 > Now imagine you run 50 Sage > sessions, each with an instance of GAP reserving a chunk of swap. Then the GAP pool will become smaller for each subsequent session as 1/10th of the remaining swap (the default choice) gets less and less. -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To view this discussion on the web visit https://groups.google.com/d/msg/sage-combinat-devel/-/-CxzWgqATp8J. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
Re: [sage-combinat-devel] Re: combinat out again?
On Tue, Dec 4, 2012 at 8:39 PM, Keshav Kini wrote: > Anne Schilling writes: >> Hi William, >> >> Since the machine has been down quite a bit and we bought it from the >> NSF grant, do you think it would be a good idea to ask for an exchange? > > William sent a mail to the sagemath-users list saying that Dell will be > replacing a faulty (?) memory module in the combinat.math.washington.edu > machine, after which "this will stop happening":: Yes. However, they want me to do some more testing first -- they will either (1) replace a memory chip, or (2) replace the entire motherboard. This will be completely covered under the warranty, and should be done pretty quickly (and certainly within the next 10 days at worst). > >> It turns out that indeed combinat.math.washington.edu was down with a >> memory error again. I've rebooted it.Dell will also be fixing it >> (by replacing the DIMM) this week, so this will stop happening. This >> means some downtime (for combinat only) later this week (not yet >> scheduled). > > -Keshav > > -- > You received this message because you are subscribed to the Google Groups > "sage-combinat-devel" group. > To post to this group, send email to sage-combinat-devel@googlegroups.com. > To unsubscribe from this group, send email to > sage-combinat-devel+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/sage-combinat-devel?hl=en. > -- William Stein Professor of Mathematics University of Washington http://wstein.org -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
Re: [sage-combinat-devel] Re: combinat out again?
On 12/4/12 10:42 PM, William Stein wrote: > On Tue, Dec 4, 2012 at 8:39 PM, Keshav Kini wrote: >> Anne Schilling writes: >>> Hi William, >>> >>> Since the machine has been down quite a bit and we bought it from the >>> NSF grant, do you think it would be a good idea to ask for an exchange? >> >> William sent a mail to the sagemath-users list saying that Dell will be >> replacing a faulty (?) memory module in the combinat.math.washington.edu >> machine, after which "this will stop happening":: > > Yes. However, they want me to do some more testing first -- they will > either (1) replace a memory chip, or (2) replace the entire > motherboard. This will be completely covered under the warranty, and > should be done pretty quickly (and certainly within the next 10 days > at worst). Ok, thanks for letting us know! Anne -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
Re: [sage-combinat-devel] Re: combinat out again?
Yes, thank you for taking care of this William. I am sure you have better things to do! Andrew -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To view this discussion on the web visit https://groups.google.com/d/msg/sage-combinat-devel/-/K5CWg3EqOQ0J. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
Re: [sage-combinat-devel] Re: combinat out again?
Hi, After moving memory around, memtest86 (and the BIOS memtest) detected no errors. If people can try to stress test combinat.math.washington.edu for the next 24 hours (especially with large-memory computations), that would be very useful! William On Wed, Dec 5, 2012 at 3:25 PM, William Stein wrote: > Hi, > > Andrew Ohana and I swapped two chips around and are currently running > memtest86 on > combinat.math. I'll check on the results tomorrow at about noon. > > -- William > > On Tue, Dec 4, 2012 at 10:49 PM, Andrew Mathas > wrote: >> Yes, thank you for taking care of this William. I am sure you have better >> things to do! >> >> Andrew >> >> -- >> You received this message because you are subscribed to the Google Groups >> "sage-combinat-devel" group. >> To view this discussion on the web visit >> https://groups.google.com/d/msg/sage-combinat-devel/-/K5CWg3EqOQ0J. >> >> To post to this group, send email to sage-combinat-devel@googlegroups.com. >> To unsubscribe from this group, send email to >> sage-combinat-devel+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/sage-combinat-devel?hl=en. > > > > -- > William Stein > Professor of Mathematics > University of Washington > http://wstein.org -- William Stein Professor of Mathematics University of Washington http://wstein.org -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
Re: [sage-combinat-devel] Re: combinat out again?
Hi William, Sorry to bother you with this, but could you please reset my password on combinat.math.washington.edu and send it to me? I seem to have forgotten my old password. Thank you, Anne On 12/6/12 10:36 AM, William Stein wrote: > Hi, > > After moving memory around, memtest86 (and the BIOS memtest) detected > no errors. If people can try to stress test > combinat.math.washington.edu for the next 24 hours (especially with > large-memory computations), that would be very useful! > > William > > On Wed, Dec 5, 2012 at 3:25 PM, William Stein wrote: >> Hi, >> >> Andrew Ohana and I swapped two chips around and are currently running >> memtest86 on >> combinat.math. I'll check on the results tomorrow at about noon. >> >> -- William >> >> On Tue, Dec 4, 2012 at 10:49 PM, Andrew Mathas >> wrote: >>> Yes, thank you for taking care of this William. I am sure you have better >>> things to do! >>> >>> Andrew >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "sage-combinat-devel" group. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msg/sage-combinat-devel/-/K5CWg3EqOQ0J. >>> >>> To post to this group, send email to sage-combinat-devel@googlegroups.com. >>> To unsubscribe from this group, send email to >>> sage-combinat-devel+unsubscr...@googlegroups.com. >>> For more options, visit this group at >>> http://groups.google.com/group/sage-combinat-devel?hl=en. >> >> >> >> -- >> William Stein >> Professor of Mathematics >> University of Washington >> http://wstein.org > -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
Re: [sage-combinat-devel] Re: combinat out again?
Hi, On Fri, Dec 7, 2012 at 5:36 AM, William Stein wrote: > After moving memory around, memtest86 (and the BIOS memtest) detected > no errors. If people can try to stress test > combinat.math.washington.edu for the next 24 hours (especially with > large-memory computations), that would be very useful! OK then, I'll run 4 processes of my patented hog-the-memory-and-crash-the-server Maeda code for a while. I'll try to keep an eye on them, but feel free to kill them if needed. -- Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne http://aghitza.org -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
Re: [sage-combinat-devel] Re: combinat out again?
Is anyone able to get an account on combinat.math.washington.edu? I could certainly run some memory intensive jobs if required. Andrew -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To view this discussion on the web visit https://groups.google.com/d/msg/sage-combinat-devel/-/9RLf_AKvIyEJ. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
Re: [sage-combinat-devel] Re: combinat out again?
On Thu, Dec 6, 2012 at 3:48 PM, Andrew Mathas wrote: > Is anyone able to get an account on combinat.math.washington.edu? I could > certainly run some memory intensive jobs if required. Are they related to Sage combinatorics research? William > > > Andrew > > -- > You received this message because you are subscribed to the Google Groups > "sage-combinat-devel" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/sage-combinat-devel/-/9RLf_AKvIyEJ. > > To post to this group, send email to sage-combinat-devel@googlegroups.com. > To unsubscribe from this group, send email to > sage-combinat-devel+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/sage-combinat-devel?hl=en. -- William Stein Professor of Mathematics University of Washington http://wstein.org -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
Re: [sage-combinat-devel] Re: combinat out again?
> Are they related to Sage combinatorics research? > Of course, otherwise I wouldn't ask. (I'm computing the graded dimensions of simple modules and the graded dimensions of hom-spaces (for some reducible modules).) Andrew -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To view this discussion on the web visit https://groups.google.com/d/msg/sage-combinat-devel/-/YgHntXOrxdYJ. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
Re: [sage-combinat-devel] Re: combinat out again?
On Thu, Dec 6, 2012 at 4:27 PM, Andrew Mathas wrote: > >> Are they related to Sage combinatorics research? > > > Of course, otherwise I wouldn't ask. (I'm computing the graded dimensions of > simple modules and the graded dimensions of hom-spaces (for some reducible > modules).) Send me an offlist email with your desired login name. > > Andrew > > -- > You received this message because you are subscribed to the Google Groups > "sage-combinat-devel" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/sage-combinat-devel/-/YgHntXOrxdYJ. > > To post to this group, send email to sage-combinat-devel@googlegroups.com. > To unsubscribe from this group, send email to > sage-combinat-devel+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/sage-combinat-devel?hl=en. -- William Stein Professor of Mathematics University of Washington http://wstein.org -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
Re: [sage-combinat-devel] Re: combinat out again?
On Thu, Dec 06, 2012 at 03:48:00PM -0800, Andrew Mathas wrote: >Is anyone able to get an account on combinat.math.washington.edu? This machine was purchased using the recent Sage-Combinat NSF Computional Mathematics grant co-PI'ed by Anne, Dan, Gregg, William and (unofficially for I am an alien) myself. It's indeed meant for computations in (algebraic) combinatorics and sage-combinat software development (e.g. running tests). You definitely fit in :-) >I could certainly run some memory intensive jobs if required. Have fun :-) Nicolas -- Nicolas M. Thiéry "Isil" http://Nicolas.Thiery.name/ -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
Re: [sage-combinat-devel] Re: combinat out again?
Hi William, Is combinat.math.washington.edu out once again? The machine does not seem to respond. I saw that several people were running heavy computations on it for the last week and until yesterday, everything seemed fine. Thanks, Anne On 12/6/12 10:36 AM, William Stein wrote: > Hi, > > After moving memory around, memtest86 (and the BIOS memtest) detected > no errors. If people can try to stress test > combinat.math.washington.edu for the next 24 hours (especially with > large-memory computations), that would be very useful! > > William > > On Wed, Dec 5, 2012 at 3:25 PM, William Stein wrote: >> Hi, >> >> Andrew Ohana and I swapped two chips around and are currently running >> memtest86 on >> combinat.math. I'll check on the results tomorrow at about noon. >> >> -- William >> >> On Tue, Dec 4, 2012 at 10:49 PM, Andrew Mathas >> wrote: >>> Yes, thank you for taking care of this William. I am sure you have better >>> things to do! >>> >>> Andrew >>> -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
Re: [sage-combinat-devel] Re: combinat out again?
On Wed, Dec 12, 2012 at 7:00 PM, Anne Schilling wrote: > Hi William, > > Is combinat.math.washington.edu out once again? The machine does not > seem to respond. It's not crashed due to a memory error, since it responds to ping requests. However, I can't ssh into it, which can happen when too many people run jobs at once (and the vm.overcommit ratio is too big, and there isn't enough swap). I'll get the sysadmins to reboot the machine tomorrow morning, then tighten up the vm.overcommit, and add more swap. -- William > I saw that several people were running heavy computations on it for the > last week and until yesterday, everything seemed fine. > > Thanks, > > Anne > > On 12/6/12 10:36 AM, William Stein wrote: >> Hi, >> >> After moving memory around, memtest86 (and the BIOS memtest) detected >> no errors. If people can try to stress test >> combinat.math.washington.edu for the next 24 hours (especially with >> large-memory computations), that would be very useful! >> >> William >> >> On Wed, Dec 5, 2012 at 3:25 PM, William Stein wrote: >>> Hi, >>> >>> Andrew Ohana and I swapped two chips around and are currently running >>> memtest86 on >>> combinat.math. I'll check on the results tomorrow at about noon. >>> >>> -- William >>> >>> On Tue, Dec 4, 2012 at 10:49 PM, Andrew Mathas >>> wrote: Yes, thank you for taking care of this William. I am sure you have better things to do! Andrew -- William Stein Professor of Mathematics University of Washington http://wstein.org -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
Re: [sage-combinat-devel] Re: combinat out again?
On Wed, Dec 12, 2012 at 11:30 PM, William Stein wrote: > On Wed, Dec 12, 2012 at 7:00 PM, Anne Schilling wrote: >> Hi William, >> >> Is combinat.math.washington.edu out once again? The machine does not >> seem to respond. > > It's not crashed due to a memory error, since it responds to ping > requests. However, I can't ssh into it, which can happen when too > many people run jobs at once (and the vm.overcommit ratio is too big, > and there isn't enough swap). I'll get the sysadmins to reboot the > machine tomorrow morning, then tighten up the vm.overcommit, and add > more swap. The machine is back up. The vm.overcommit stuff looks fine -- it's the same settings as on sage.math, etc. Later today, I'm going to add an extra 96GB of swap to the little 32GB of swap currently there; this should help with stability a lot. William > > -- William > >> I saw that several people were running heavy computations on it for the >> last week and until yesterday, everything seemed fine. > > > >> >> Thanks, >> >> Anne >> >> On 12/6/12 10:36 AM, William Stein wrote: >>> Hi, >>> >>> After moving memory around, memtest86 (and the BIOS memtest) detected >>> no errors. If people can try to stress test >>> combinat.math.washington.edu for the next 24 hours (especially with >>> large-memory computations), that would be very useful! >>> >>> William >>> >>> On Wed, Dec 5, 2012 at 3:25 PM, William Stein wrote: Hi, Andrew Ohana and I swapped two chips around and are currently running memtest86 on combinat.math. I'll check on the results tomorrow at about noon. -- William On Tue, Dec 4, 2012 at 10:49 PM, Andrew Mathas wrote: > Yes, thank you for taking care of this William. I am sure you have better > things to do! > > Andrew > > > > > -- > William Stein > Professor of Mathematics > University of Washington > http://wstein.org -- William Stein Professor of Mathematics University of Washington http://wstein.org -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
Re: [sage-combinat-devel] Re: combinat out again?
On Thu, Dec 13, 2012 at 11:55 AM, William Stein wrote: > On Wed, Dec 12, 2012 at 11:30 PM, William Stein wrote: >> On Wed, Dec 12, 2012 at 7:00 PM, Anne Schilling >> wrote: >>> Hi William, >>> >>> Is combinat.math.washington.edu out once again? The machine does not >>> seem to respond. >> >> It's not crashed due to a memory error, since it responds to ping >> requests. However, I can't ssh into it, which can happen when too >> many people run jobs at once (and the vm.overcommit ratio is too big, >> and there isn't enough swap). I'll get the sysadmins to reboot the >> machine tomorrow morning, then tighten up the vm.overcommit, and add >> more swap. > > The machine is back up. > The vm.overcommit stuff looks fine -- it's the same settings as on > sage.math, etc. > > Later today, I'm going to add an extra 96GB of swap to the little 32GB > of swap currently there; this should help with stability a lot. I changed the vm.overcommit settings to: vm.overcommit_memory=2 vm.overcommit_ratio=60 and I've added the swap, so now there's 134GB of swap: root@combinat:/etc# free total used free sharedbuffers cached Mem: 198068436 20060256 178008180 0 5854844144288 -/+ buffers/cache: 15330484 182737952 Swap:134537208 0 134537208 Let me know if there's any trouble. I can buy and install another disk so we have more swap, if people feel that is a good idea (there is definitely plenty of room in the grant for this.) -- William > > William > >> >> -- William >> >>> I saw that several people were running heavy computations on it for the >>> last week and until yesterday, everything seemed fine. >> >> >> >>> >>> Thanks, >>> >>> Anne >>> >>> On 12/6/12 10:36 AM, William Stein wrote: Hi, After moving memory around, memtest86 (and the BIOS memtest) detected no errors. If people can try to stress test combinat.math.washington.edu for the next 24 hours (especially with large-memory computations), that would be very useful! William On Wed, Dec 5, 2012 at 3:25 PM, William Stein wrote: > Hi, > > Andrew Ohana and I swapped two chips around and are currently running > memtest86 on > combinat.math. I'll check on the results tomorrow at about noon. > > -- William > > On Tue, Dec 4, 2012 at 10:49 PM, Andrew Mathas > wrote: >> Yes, thank you for taking care of this William. I am sure you have better >> things to do! >> >> Andrew >> >> >> >> >> -- >> William Stein >> Professor of Mathematics >> University of Washington >> http://wstein.org > > > > -- > William Stein > Professor of Mathematics > University of Washington > http://wstein.org -- William Stein Professor of Mathematics University of Washington http://wstein.org -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
