Hi Al,
This looks really great!
One question: have you tried benchmarking the BW with up/down
routing using the guid_routing_order_file option w/o your new
features?
-- YK
On 08-Oct-10 7:40 PM, Albert Chu wrote:
Hey Sasha,
We recently got a new cluster and I've been experimenting with some
On Tue, Oct 12, 2010 at 12:13:26AM +0200, Or Gerlitz wrote:
Guys, can you clarify if the hardware limitation is 511 entries or its
(PAGE_SIZE / sizeof(pointer)) - 1 which is 4096 / 8 - 1 = 511 but can
change if the page size gets bigger or smaller?
The limit is 511 entries.
After I posted
In the original code there was a potential integer overflow if you
passed in a large cmd.ne. The calls to kmalloc() would allocate smaller
buffers than intended, leading to memory corruption.
There was also an information leak.
Documentation/infiniband/user_verbs.txt suggests this function is
My motivation for using the dat_cno_fd_create() is that I am able
register a file descriptor with a reactor (all events go through a
reactor which has multiple I/O including I/O which is not at all tied to
uDAPL). An application is able to work on other tasks while waiting for
the reactor to call
Hey Yevgeny,
Yes, I tried that and it didn't have much of an effect. Ever since
Sasha put in his routing sorted by switch load
(sort_ports_by_switch_load() in osm_ucast_mgr.c), guid_routing_order
isn't really necessary (as long as most of the cluster is up).
Al
On Tue, 2010-10-12 at 00:59
Hello,
Has anyone already tried to process the work completions generated by
a HCA after the state of a queue pair has been changed to IB_QPS_ERR ?
With the hardware/firmware/driver combination I have tested I have
observed the following:
* Multiple completions with the same wr_id and nonzero
Bart Van Assche bvanass...@acm.org wrote:
Has anyone been looking into this before ?
nope, never ever, what hca is that?
Or.
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On Tue, Oct 12, 2010 at 8:50 PM, Ralph Campbell
ralph.campb...@qlogic.com wrote:
On Tue, 2010-10-12 at 11:38 -0700, Bart Van Assche wrote:
Hello,
Has anyone already tried to process the work completions generated by
a HCA after the state of a queue pair has been changed to IB_QPS_ERR ?
With
The kernel mad interface allows a client to view all
sent and received MADs. This has proven to be a useful
debugging technique when paired with the external kernel
module, madeye. However, madeye was never intended to
be submitted upstream.
A couple of alternatives have been proposed for
In preparation for exporting the kernel mad snooping capability
to user space, remove all code originally inserted as place holders
and simplify the mad snooping interface.
For performance reasons, we want to filter which mads are reported
to clients of the snooping interface at the lowest level,
Export the mad snooping capability to user space clients
through the existing umad interface. This will allow
users to capture MAD data for debugging, plus it allows
for services to act on MAD traffic that occurs. For example,
a daemon could snoop SA queries and CM messages as part of
providing
On Tue, Oct 12, 2010 at 08:58:59PM +0200, Bart Van Assche wrote:
On Tue, Oct 12, 2010 at 8:50 PM, Ralph Campbell
ralph.campb...@qlogic.com wrote:
On Tue, 2010-10-12 at 11:38 -0700, Bart Van Assche wrote:
Hello,
Has anyone already tried to process the work completions generated by
a HCA
Hi Bruce,
These fixes are ready for 2.6.37. They fix two bugs in the server-side
NFSRDMA transport.
Thanks,
Tom
---
Tom Tucker (2):
svcrdma: Cleanup DMA unmapping in error paths.
svcrdma: Change DMA mapping logic to avoid the page_address kernel API
There was logic in the send path that assumed that a page containing data
to send to the client has a KVA. This is not always the case and can result
in data corruption when page_address returns zero and we end up DMA mapping
zero.
This patch changes the bus mapping logic to avoid page_address()
There are several error paths in the code that do not unmap DMA. This
patch adds calls to svc_rdma_unmap_dma to free these DMA contexts.
Signed-off-by: Tom Tucker t...@opengridcomputing.com
---
net/sunrpc/xprtrdma/svc_rdma_recvfrom.c |1 +
net/sunrpc/xprtrdma/svc_rdma_sendto.c|2 ++
On Tue, Oct 12, 2010 at 12:10:37PM -0700, Hefty, Sean wrote:
The kernel mad interface allows a client to view all
sent and received MADs. This has proven to be a useful
debugging technique when paired with the external kernel
module, madeye. However, madeye was never intended to
be
After I posted this patch, I was told that there is yet another
constraint on the page list: The buffer containing the list must not
cross a page boundary. So I was thinking what is the best way to deal
with this. One way is to always allocate a whole page and map it using
TBH, I think this would be much better off integrating with the
existing paths tcpdump/setc uses rather than yet again something new
This ties in with the existing MAD interface, which isn't going away anytime
soon, if ever.
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On Tue, Oct 12, 2010 at 01:31:17PM +0200, Dan Carpenter wrote:
In the original code there was a potential integer overflow if you
passed in a large cmd.ne. The calls to kmalloc() would allocate smaller
buffers than intended, leading to memory corruption.
Keep in mind these are probably
On Tue, Oct 12, 2010 at 01:54:54PM -0700, Hefty, Sean wrote:
TBH, I think this would be much better off integrating with the
existing paths tcpdump/setc uses rather than yet again something new
This ties in with the existing MAD interface, which isn't going away
anytime soon, if ever.
I
On Tue, Oct 12, 2010 at 06:29:53PM +0200, Alekseys Senin wrote:
On Tue, 2010-10-05 at 14:12 -0500, Christoph Lameter wrote:
On Tue, 5 Oct 2010, Jason Gunthorpe wrote:
On Tue, Oct 05, 2010 at 06:07:37PM +0200, Aleksey Senin wrote:
When using slow SM allow more packets to be
On Tue, Oct 12, 2010 at 01:37:37PM -0700, Roland Dreier wrote:
Is there any chance of the dma_alloc_coherent() in the current code
allocating memory that crosses a page boundary?
You mean that the allocation is aligned at least to its size? I could
not find any commitment to this anywhere.
TBH, I think this would be much better off integrating with the
existing paths tcpdump/setc uses rather than yet again something new
This ties in with the existing MAD interface, which isn't going away
anytime soon, if ever.
I didn't say the MAD interface was going away, I said it
Folks:
I have a multi-processor machine, running FedoraCore 12. I have installed OFED
1.5. Everything seems to come up ok, I
can look at the ibstat and it shows that the Mellanox card stats etc...
As soon as I start opensm, I get the following kernel oops and the machine
locks up.
Any
Hi Arnd,
Today's linux-next merge of the bkl-llseek tree got a conflict in
drivers/infiniband/hw/cxgb4/device.c between commit
8bbac892fb75d20fa274ca026e24faf00afbf9dd (RDMA/cxgb4: Add default_llseek
to debugfs files) from the infiniband tree and commit
9711569d06e7df5f02a943fc4138fb152526e719
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