Re: Tyan Thunder K8W S2885 with 4GB memory missing memory??
I have found my memory. One must set two seperate setting in the BIOS that both are not ducumented in teh most recent manual. The first is in the Advanced, CPU configuration section. Set MTRR to discrete. The second is in the Chipset, North Bridge Configuration, Memory configuration section. Set Software memory hole to enabled. -- Groeten, Joost Kraaijeveld Askesis B.V. Molukkenstraat 14 6524NB Nijmegen tel: 024-3888063 / 06-51855277 fax: 024-3608416 e-mail: [EMAIL PROTECTED] web: www.askesis.nl -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Tyan Thunder K8W S2885 with 4GB memory missing memory??
Joost, Quite a while ago I did the same on my Tyan S2875 and linux indeed started seeing all 4GB of memory. BUT! As soon as application were trying to access high memory regions, the system crashed. I would suggest first to test the memory usage. The simplest test is copying a dvd image or a file of comparable size so it would get cached into memory. Max Joost Kraaijeveld wrote: I have found my memory. One must set two seperate setting in the BIOS that both are not ducumented in teh most recent manual. The first is in the Advanced, CPU configuration section. Set MTRR to discrete. The second is in the Chipset, North Bridge Configuration, Memory configuration section. Set Software memory hole to enabled. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Tyan Thunder K8W S2885 with 4GB memory missing memory??
On Wed, Sep 28, 2005 at 02:58:41AM +0200, Lionel Elie Mamane wrote: On my S2895, I have in Advanced / Hammer / Memory Hole / Memhole mapping, the choice between disabled, software and hardware. The one that works is software. If I set hardware, it just goes back to disabled after boot. There is an informative thread on this on http://lists.suse.com/archive/suse-amd64/2005-Jul/0064.html . In particular, http://lists.suse.com/archive/suse-amd64/2005-Jul/0110.html says you need a revision E or later CPU to do hardware remapping :-( Had I known, I'd have payed more attention to which CPU to buy. -- Lionel -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Tyan Thunder K8W S2885 with 4GB memory missing memory??
Joost Kraaijeveld wrote: Hi, Is there something special about running Debian Sarge 3.1 AMD64 on a Tyan Thunder K8W S2885 with 4GB memory? On boot, the motherboard reports 4096 MB memory (which is correct: I have put it there myself ;-)) but Debian (top, gnome-system-monitor and cat /proc/meminfo) report 3734480 kB memory. Does anyone know where my memory is? This has something to do with your motherboard reserving memory (pci memory hole). You can normally change this in the bios (I think it was in Hammer configuration for the Tyan board I had). If I remember well, I set the hole to automatic and that solved the problem. Regards, Koen. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Tyan Thunder K8W S2885 with 4GB memory missing memory??
On Tue, Sep 27, 2005 at 06:37:50AM -0700, Max wrote: I'm suffering the same problem on S2875. While is it possible to make Linux seeing all 4GB of memory available, that causes kernel traps on attempts to use higher memory regions. So I'm forced to live with smaller amount of memory visible in favor of system stability. Max From the official Tyan FAQ: === Why does my OS see less than the total memory installed when I install 4GB or more of memory (typically 512MB less)? The BIOS needs to overlay the APIC, ACPI Table, AGP Aperture and PCI MMIO (Memory-mapped I/O [see PCI Spec 2.3, Section 3.2.2 for more information]) over the last 512MB of the 4GB physical address space. OS accessible memory and these structures cannot both exist at the same place and this portion of DRAM is hidden and unavailable to the OS. Is there a solution for the missing memory when using 4GB of total memory? Not easily, the theoretical possibility exists that the BIOS can map all of the addresses attached to one DIMM module above the 4GB limit, but the BIOS cannot move smaller address ranges piece by piece. Mapping a whole DIMM is a new concept, unproven in real world testing. It also penalizes 32-bit OS's that cannot use more than 4GB. Since the BIOS does not know what OS you have when it does the memory assignments, it has to optimize for the common case, which is likely a 32-bit OS you may or may not want to use. In a system with less than 4GB the BIOS must choose between providing as much as possible below 4GB to benefit 32-bit legacy OS users or raise one whole DIMM module above the 4GB ceiling to benefit 64-bit OS 's at the loss of DRAM to a much more memory limited 32-bit OS. What a load of crap. They don't have to decide which way to optimize it. They should let the end user pick that with a bios option just as almost every other athlon 64/opteron board has done. Time for them to make a bios update with proper options in it if that is really the current state of their bios. Len Sorensen -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Tyan Thunder K8W S2885 with 4GB memory missing memory??
Lennart Sorensen пишет: On Tue, Sep 27, 2005 at 06:37:50AM -0700, Max wrote: I'm suffering the same problem on S2875. While is it possible to make Linux seeing all 4GB of memory available, that causes kernel traps on attempts to use higher memory regions. So I'm forced to live with smaller amount of memory visible in favor of system stability. Max From the official Tyan FAQ: === Why does my OS see less than the total memory installed when I install 4GB or more of memory (typically 512MB less)? The BIOS needs to overlay the APIC, ACPI Table, AGP Aperture and PCI MMIO (Memory-mapped I/O [see PCI Spec 2.3, Section 3.2.2 for more information]) over the last 512MB of the 4GB physical address space. OS accessible memory and these structures cannot both exist at the same place and this portion of DRAM is hidden and unavailable to the OS. Is there a solution for the missing memory when using 4GB of total memory? Not easily, the theoretical possibility exists that the BIOS can map all of the addresses attached to one DIMM module above the 4GB limit, but the BIOS cannot move smaller address ranges piece by piece. Mapping a whole DIMM is a new concept, unproven in real world testing. It also penalizes 32-bit OS's that cannot use more than 4GB. Since the BIOS does not know what OS you have when it does the memory assignments, it has to optimize for the common case, which is likely a 32-bit OS you may or may not want to use. In a system with less than 4GB the BIOS must choose between providing as much as possible below 4GB to benefit 32-bit legacy OS users or raise one whole DIMM module above the 4GB ceiling to benefit 64-bit OS 's at the loss of DRAM to a much more memory limited 32-bit OS. What a load of crap. They don't have to decide which way to optimize it. They should let the end user pick that with a bios option just as almost every other athlon 64/opteron board has done. Time for them to make a bios update with proper options in it if that is really the current state of their bios. Len Sorensen http://www.tyan.com/support/html/b_s2885.html 05/19/04 2885_202 ftp://ftp.tyan.com/bios/2885_202.zip *TYAN Thunder K8W (S2885) V2.02 New features and Fixes : ** Updated AMI Core (v8.00.10) * Added Opteron CPU CG Stepping support * Added Memory PCI Address Re-Map support * Updated SiL3114 Option ROM to v5.0.35 * Added MTRR map options * Added Chassis Intrusion support * Added MemCLK limit option Update your BIOS if needed and set MTRR option from continuous to discrete. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Tyan Thunder K8W S2885 with 4GB memory missing memory??
On Tue, Sep 27, 2005 at 07:40:07PM +0400, Kulagin D.I. wrote: What a load of crap. They don't have to decide which way to optimize it. They should let the end user pick that with a bios option just as almost every other athlon 64/opteron board has done. Time for them to make a bios update with proper options in it if that is really the current state of their bios. http://www.tyan.com/support/html/b_s2885.html 05/19/04 2885_202 ftp://ftp.tyan.com/bios/2885_202.zip *TYAN Thunder K8W (S2885) V2.02 New features and Fixes : ** Updated AMI Core (v8.00.10) * Added Opteron CPU CG Stepping support * Added Memory PCI Address Re-Map support * Updated SiL3114 Option ROM to v5.0.35 * Added MTRR map options * Added Chassis Intrusion support * Added MemCLK limit option Update your BIOS if needed and set MTRR option from continuous to discrete. Well good to know that is is in fact _not_ the current state of Tyan's bios. Slightly hard to believe they released the board without memory remap support in the first place, but that was over a year ago so maybe it was considered normal then. Len Sorensen -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Tyan Thunder K8W S2885 with 4GB memory missing memory??
Kulagin D.I. wrote: Update your BIOS if needed and set MTRR option from continuous to discrete. Lucky you. As I said before, for Tyan S2875 this leads to system instability. Max -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Tyan Thunder K8W S2885 with 4GB memory missing memory??
On Tue, 2005-09-27 at 09:51 -0700, Max wrote: Kulagin D.I. wrote: Update your BIOS if needed and set MTRR option from continuous to discrete. Lucky you. As I said before, for Tyan S2875 this leads to system instability. I have this bios and I have applied the setting and it does not seem to work... -- Groeten, Joost Kraaijeveld Askesis B.V. Molukkenstraat 14 6524NB Nijmegen tel: 024-3888063 / 06-51855277 fax: 024-3608416 e-mail: [EMAIL PROTECTED] web: www.askesis.nl -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Tyan Thunder K8W S2885 with 4GB memory missing memory??
On Tue, Sep 27, 2005 at 07:55:52PM +0200, Joost Kraaijeveld wrote: On Tue, 2005-09-27 at 09:51 -0700, Max wrote: Kulagin D.I. wrote: Update your BIOS if needed and set MTRR option from continuous to discrete. Lucky you. As I said before, for Tyan S2875 this leads to system instability. I have this bios and I have applied the setting and it does not seem to work... On my S2895, I have in Advanced / Hammer / Memory Hole / Memhole mapping, the choice between disabled, software and hardware. The one that works is software. If I set hardware, it just goes back to diabled after boot. -- Lionel -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
