GPU FAQ

Since the public release of the Folding@Home client for modern ATI GPUs several issues have come up. Some of them are known and included in the GPU FAQ. Others are being discussed in the Folding-Community support forum.

If you have an issue which is not reported yet, please report it on the Folding Forum.

Supported Graphics Cards
GPU1 client: ATI x1600, x1800, and x1900 class (discountinued June 6, 2008)

GPU2 client: ATI HD2xxx, HD3xxx class, HD4xxx and later (Anything with CAL support in the drivers.) _a_n_d____: All nVidia 8xxx class GPUs and later* (Anything with CUDA support in the drivers.)
 * Note that nVidia cards with less than 256MB of video do not have support for CUDA

GPU3 client: v6.31 console and v6.32 systray clients, and Fahcore_15 released to open beta 05/25/2010. Added support for NV GTX 4xx GPUs. New FAQ: NV GPU3 on FAH web site. Link to environment variables for Gpu client:

Will earlier ATI cards such as the 9600PRO ever be supported?
No!

The short technical answer is that those boards do not support looping constructs and are also 24-bit precision which is a problem for us. The X1K boards were the first to support 32-bit precision and branching/looping on the ATI/AMD side of the world. ---mhouston

Known Issues

 * If Windows enters the "fast user switching" screen the GPU core will quit. Solution for now is to turn off the screensaver going to login screen.
 * Doing a 3-finger salute [ctrl][alt][del] to bring up the task manager will also cause the GPU to exit. Solution: right-click on the task bar then click "Task Manager"

Note: The GPU2 clients based on CAL and CUDA have resolved many of these DX9 context based errors.

Version Info
Please note: the version info below is a future roadmap for cores and not all cores are publicly available.

Recent ATI versions:

Ati v1.13   09/16/08   Fixed a bug in corewrapper code; added more diagnostics and include restriction: T_calc - T_tpr > 200 for triggering EUE; previously the constraint had been T_calc/T_tpr > 2.
 * 951446 Sep 16 11:17 Core_12.fah md5sum=322281cfc0176592b42e36d006864c9d
 * 3670016 Sep 16 11:17 FahCore_12 md5sum=7a4e390764d86455a87f5c9fc92ed3a4

Ati v1.14   09/29/08   Core_11 version of v1.13
 * 955707 Sep 29 15:41 Core_11.fah md5sum=84b00dc0fef800ea6060b4cd28484bde
 * 3710976 Sep 29 15:41 FahCore_11  md5sum=447da667df4d34fdeb229c6d1649e036

Ati v1.15   09/30/08   Core_12 -- includes mods to integrator to enhance numerical stability
 * 953855 Sep 30 12:12 Core_12.fah md5sum=3447fcac6cde5738d500dbfc55e1d55c
 * 3719168 Sep 30 12:12  FahCore_12 md5sum=9f7aa49e47f7f02702fab3d1dfffb8ed

Ati v1.16   10/08/08   Core_12 -- returns UNSTABLE_MACHINE instead of INTERRUPTED when NAN, Self-test failure, ... errors are detected.
 * 954004 Oct 8 16:09 Core_12.fah  md5sum=fd534c57b3ad01c2fe81694c576bf097
 * 3719168 Oct 8 16:09 FahCore_12   md5sum=abad0a9b89cdb3706f6f6e7dea1a12dc

Ati v1.17   10/13/08   Core_11 -- same changes as w/ Core_12 v1.16: returns UNSTABLE_MACHINE instead of INTERRUPTED when NAN, Self-test failure, ... errors are detected.
 * 955814 Oct 13 10:55 Core_11.fah md5sum=b8cd622ef057678d38a5b69d4227a2eb
 * 3710976 Oct 13 10:55 FahCore_11 md5sum=3be79f78d8c0cc90b4d7b5514c044e23

Ati v1.18   10/14/08  Core_11 includes mods to integrator to enhance numerical stability


 * 954612 Oct 14 13:06 Core_11.fah md5sum=3dcdb35a83b3eed6661dff1c2cb69c0c
 * 3719168 Oct 14 13:06 FahCore_11 md5sum=5e66bac7d27efc0f8fe9f71ee5ba1b2f

Ati v1.19   11/18/08  Core_12 core for testing performance on 7XX boards
 * 963672 Nov 18 16:21 Core_12.fah md5sum=9a76a9fd8a4e3a81f1f40135625e10eb
 * 3805184 Nov 18 16:21 FahCore_12 md5sum=13fb2571295e1810b555822c794f37f8

Ati v1.20   11/19/08 Manual download

Ati v1.21   11/25/08  Core_12 AMD bug fix
 * 1056128 Nov 25 16:40 Core_12.fah md5sum=caa8c5a48a1f9ed3d8340454165e73ef
 * 3035136 Nov 25 16:40 FahCore_12 md5sum=37454bcf4030be3f982c3b2aebc1843c

Ati v1.22   12/08/08  Core_11 version of Core_12 v1.21 w/ a fix to SHAKE code
 * 1056837 Dec 8 14:09 Core_11.fah md5sum=7806799a675a0c7cf9df75e9361dc58a
 * 3035136 Dec 8 14:09 FahCore_11  md5sum=6d66f383666c58e3b1abeda5b365aa8e

Ati v1.23   01/20/09  Core_12 Shake fix and improved checkpointing
 * 1091279 Jan 20 19:23 Core_12.fah md5sum=6a0b1b53780b127780aaac4abb44e564
 * 3198976 Jan 20 19:23 FahCore_12 md5sum=b12e178009ef6b5e641093ee9f684560

Ati v1.24   02/06/09  Core_12 New libs from AMD; allows CAL_NO_FLUSH to be turned on, fixes CAL resources issue, ...
 * 1091241 Feb 6 12:47 Core_12.fah md5sum=119d153258c331039ecee3c68b6f739b
 * 3203072 Feb 6 12:44 FahCore_12  md5sum=0b34e94e54233b329cac70c96407d10a

Ati v1.24   02/09/09  Core_11   Same as Core_12 v1.24
 * 1091180 Feb 9 12:05 Core_11.fah md5sum=9369d87f2dc39e59965698ec04929267
 * 3203072 Feb 9 12:05 FahCore_11  md5sum=b7c4ce9c7f921e609d979b03407cbb00

Ati v2.10   09/15/10  Initial Core_16
 * 1055710 Sep 15 12:37 Core_16.fah md5sum=42df49651ad728b395c386b6f7e1f3da
 * 2437120 Sep 15 12:37 FahCore_16 md5sum=67f6835303e368408608e0be9917c66e
 * 2437120 Sep 15 12:37 FahCore_16 md5sum=67f6835303e368408608e0be9917c66e

Ati v2.11   12/09/10  Initial Core_16
 * 1.1M Dec 9 15:02 Core_16.fah md5sum=38aab5d6da8eb9eef0c7049e3768ff14
 * 2.4M Dec 9 15:00 FahCore_16  md5sum=17b894ce251861c28da251146e0e268b

Recent Nvidia versions:

Nvidia v1.11 09/16/08 Fixed a bug in corewrapper code; added more diagnostics and include restriction T_calc - T_tpr > 200 for triggering a EUE; previously the constraint had been T_calc/T_tpr > 2.
 * 640817 Sep 16 11:28 Core_13.fah md5sum=9e47e670de9bd7b4a9ec9f941cab56ab
 * 1822720 Sep 16 11:28 FahCore_13  md5sum=cfef83d588bd8f3ac8a7ada585300aba

Nvidia v1.12 09/25/08 Core_13: Fixed memory corruption problem; more diagnostics in corewrapper
 * 640590 Sep 25 11:10 Core_13.fah md5sum=96932213269cb91f3d6c14fc2006fd29
 * 1822720 Sep 25 11:10 FahCore_13  md5sum=56b8fdaeb13c52fa1ddb6bcc2faa368d

Nvidia v1.13 09/29/08 Core_11 version of v1.12
 * 640739 Sep 29 15:25 Core_11.fah md5sum=626a6c05b6cde91ef654a1a6c67c58be
 * 1822720 Sep 29 15:25 FahCore_11 md5sum=4bd1c1de6b572b71ddc093387fa47da5

Nvidia v1.14 10/02/08 Core_13 contains fix to corewrapper code that was causing the following type error:

[03:13:12] CoreStatus = C0000005 (-1073741819) [03:13:12] Client-core communications error: ERROR 0xc0000005 [03:13:12] This is a sign of more serious problems, shutting down.


 * 640771 Oct 2 16:27 Core_13.fah md5sum=3f37f45d9fdf594df9d12da3fe944528
 * 1822720 Oct 2 16:27 FahCore_13  md5sum=23441a76782c4d4dc06406a4d2ee6bbc

Nvidia v1.15 10/13/08 Core_11: Now returns 'UNSTABLE_MACHINE' instead of 'INTERRUPTED' if there is a problem w/ the simulation.
 * 640343 Oct 13 12:14 Core_11.fah md5sum=ff9955211f647fd9f0ca55d49f2a9f1d
 * 1822720 Oct 13 12:14 FahCore_11 md5sum=3b34801b5acc5af92a4132c35ce614e2

Nvidia v1.16 10/16/08 Core_13: includes mods to integrator to enhance numerical stability
 * 643319 Oct 16 14:26 Core_13.fah md5sum=af593f3c7283f055df86529549136ed6
 * 1843200 Oct 16 14:26 FahCore_13 md5sum=a7805e3d3d30b00d54d34660f8f48efc

Nvidia v1.17 10/20/08 Core_13: essentially the same as v1.16. Diagnostic output was causing FAH to EUE; the output has been disabled.
 * 642843 Oct 20 15:15 Core_13.fah md5sum=a948b12c8c49bf3d48aff343f31c7a1a
 * 1843200 Oct 20 15:15 FahCore_13 md5sum=77ca6d19efe87a091680aec06d17bdef

Nvidia v1.18 10/23/08 Core_11: Core_11 version of v1.17; may have problems on 8800 boards
 * 642615 Oct 23 12:42 Core_11.fah md5sum=1283e8b7cdf3546d3316bb0066b8bfdf
 * 1843200 Oct 23 12:42 FahCore_11 md5sum=9e7a0356ffefa0a205309e017777a3f8

Nvidia v1.19 10/31/08 Core_13: Code based on union of v1.09 and v1.18. Includes update to integrator, memory corruption problem fix, ... The main difference between this version and v1.18 is that the performance optimizations between v1.09 & v1.13 were removed.
 * 642652 Oct 31 11:27 Core_13.fah md5sum=82710b2d639a008420d54f83b792be26
 * 1843200 Oct 31 11:27 FahCore_13 md5sum=244143b9fb7366156280fd89a79f66cd

Nvidia v1.19 11/03/08 Core_11: Same as Core_13 v1.19
 * 642475 Nov 3 10:40 Core_11.fah md5sum=bcfad16b82343cbda83391e27dbcdf5a
 * 1843200 Nov 3 10:40 FahCore_11  md5sum=c6740b5decdbad5a3de8d8731d208025

Nvidia v1.21 11/24/08 Core_13: Born radii updated prior to calculation of forces; mdp/tpr Shake tolerance setting is now honored; reposted on 11/24 (original 11/19/08) w/ correct version id in corewrapper code; md5sum values updated here


 * 642693 Nov 19 15:50 Core_13.fah   md5sum=f7e73aae83a824780fc3fa7351ba4d8a
 * 1843200 Nov 19 15:47 FahCore_13.exe md5sum=a48c89cd207a37fe10ef1606e6686972

Nvidia v1.22 12/01/08 Core_11: Same as Core_13 v1.21, but Core_11
 * 642687 Dec 1 11:46 Core_11.fah    md5sum=ffe19a839c225df3af746df0323dd1dc
 * 1843200 Dec 1 11:46 FahCore_11.exe md5sum=5f894303d6e90a6066cfb0a7d907bb56

Nvidia v1.23 01/21/09 Core_13: improved checkpointing
 * 648968 Jan 21 16:34 Core_13.fah   md5sum=262e45e9c46227f16c4accfbdd4e3bcd
 * 1859584 Jan 21 16:34 FahCore_13.exe md5sum=a4ea39254d1c2747f5d8f8d17ed4def5

Nvidia v1.24 03/23/09 Core_13: checkpoint file and other frame files removed, if error detected in reading checkpoint file
 * 649454 Mar 23 15:40 Core_13.fah   md5sum=a2ec20e13145ae843bb5f3fde6e84e54
 * 1859584 Mar 23 15:40 FahCore_13.exe md5sum=3f5a5b6ec19e3b92fb92fcb81a8a59f1

Nvidia v1.25 05/06/09 Core_11: includes checkpoint fixes, but Born radii changes from 12/08 rolled back
 * 682864 May 6 11:52 Core_11.fah    md5sum=ff3de5722abcdfd2ad0f1235a61e9ed1
 * 2166784 May 6 11:52 FahCore_11.exe md5sum=edbbf1dc78c0b7474437cad6440b490f

Nvidia v1.26 06/09/09 Core_11: experimental core that allows donors to set the environment variable, FAH_GPU_IDLE, to idle the board for a percentage of the total time. The goal is to reduce heating problems for larger work units
 * 1904640 June 9 14:10 FahCore_11.exe md5sum=c48beeb242a3fd52b9bfe6b29474ab22

Nvidia v1.27 06/18/09 Core_11: fixes logic error w/ v1.26 -- the actual idle time was 5 times smaller than requested. Also fixed 'usage' output to FAHlog.txt -- it was not being updated after the change to using the environment variable to set idle time.
 * 1904640 Jun 18 15:02 FahCore_11.exe md5sum=1ced770b67f1111bfbe8bcefacef9d1f

Nvidia v1.28 09/01/09 Core_11: Imran's fix for machines w/ multiple gpus (limited test)

Nvidia v1.29 09/10/09 Core_13: includes Peter Kasson's mods for hash files; also fix for machines w/ multiple gpus (Imran's fix)


 * 664626 Sep 10 12:24 Core_13.fah md5sum=280240fc33b445c9cfd058c453380d91
 * 1908736 Sep 10 12:24 FahCore_13.exe md5sum=6bb1315870659d16cc8e415c98ba9878

Nvidia v1.30 09/14/09 Core_11: same as v1.29


 * 664933 Sep 14 10:43 Core_11.fah md5sum=12d07e55caf100b7e2f0ca08e6bfb124
 * 1908736 Sep 14 10:40 FahCore_11.exe md5sum=4953e5c2de4072c70d6b88ad52b57664

Nvidia v1.31 09/15/09 Core_11: fixed bug in generation of hash; updated corecomp


 * 665067 Sep 15 13:16 Core_11.fah md5sum=470f020f271b2667a5c2c2f8b9938ecb
 * 1908736 Sep 15 13:16 FahCore_11.exe md5sum=832e16e37fe376a06f46bbf68cd98850

Nvidia v1.33 02/16/11 Core_11: added -gpu flag


 * 739K Feb 16 13:29 Core_11.fah md5sum=5c714d253512fd3c40b61b2659648a80
 * 2.3M Feb 16 13:28 FahCore_11.exe md5sum=fe06ae53aa76023b9a1f3a702020adb5

Nvidia v2.03 04/27/10 Core_15/Fermi: initial release


 * 1362536 Apr 27 18:22 Core_15.fah md5sum=e16479a0a16396a5aeffea2753ffed9b
 * 4087808 Apr 27 18:22 FahCore_15.exe md5sum=c73656cf5249cefb577d074e32c5e36a

Nvidia v2.03 04/27/10 Core_15/NonFermi: initial release


 * 1368167 Apr 27 18:33 Core_15.fah md5sum=41cbc44b6814eff6a72c6ed935b00bf6
 * 4087808 Apr 27 18:33 FahCore_15.exe md5sum=67d537a22ca4dd6d960658ffc7de2f55

Nvidia v2.04 04/29/10 Core_15/Fermi: fixed progress output to FAHlog and viewer


 * 1362246 Apr 29 19:34 Core_15.fah md5sum=18f23251fdff82b7dc679b6d0edd0ba7
 * 4087808 Apr 29 19:33 FahCore_15.exe md5sum=68fbe44255c3113007d4d53b064b02d9

Nvidia v2.04 04/30/10 Core_15/NonFermi: fixed thread count issue for more 'primitive' boards; fixed progress output to FAHlog and viewer; Born radii approximation active as w/ Fermi build


 * 1269627 Apr 30 17:32 Core_15.fah md5sum=41993f1f2940c81f45cf9b8994cdada8
 * 5406720 Apr 30 17:32 FahCore_15.exe md5sum=952675662a6a8b669c6653d3a1671ab4

Nvidia v2.06 05/07/10 Core_15/Fermi & NonFermi: added code to send ns/day to viewer (2.05 version); issue cudaThreadSynchronize at end of integration steps to cope w/ NVIDIA driver bug (concurrent Core and OpenGL apps crash user's machine); not signed -- for NVIDIA perfLab


 * 5406720 May 7 11:15  non-Fermi  FahCore_15.exe md5sum=0fcaf68de333fea327cb389a7d435c2e
 * 4079616 May 7 11:23      Fermi  FahCore_15.exe md5sum=893b865d5bd2ae28ba593a0b2d5ac1f3

Nvidia v2.07 05/13/10 Core_15/Fermi & NonFermi: issue cudaThreadSynchronize every 100 steps on XP or earlier (not Vista/Win7) to cope w/ NVIDIA driver bug (concurrent Core and OpenGL apps crash user's machine); ns/day was not being reported correctly if starting from checkpoint file; add version info, ... to md.log


 * 1366700 May 13 12:35       Fermi  Core_15.fah    md5sum=bf3c1022f91b53a0cd2a5224624cbed5
 * 4136960 May 13 12:35       Fermi  FahCore_15.exe md5sum=41d6943e85ceaec2efd9360024097124


 * 1411007 May 13 12:32    non-Fermi Core_15.fah    md5sum=83a8b8339bb0504c1dcdbdab66dba09c
 * 7094272 May 13 12:32    non-Fermi FahCore_15.exe md5sum=f6840ea7d6a7b886d73a5a430c4f3eb5

Nvidia v2.08 05/14/10 Core_15/Fermi & NonFermi: set CUDA device id to value of env variable BRT_ADAPTER, if set; used for machines w/ multiple gpus; env variable is set by client, if '-gpu x' flag is passed


 * 1367574 May 14 10:48       Fermi  Core_15.fah    md5sum=0e70d8f2330d3dba609ea9236d1f1e2b
 * 4136960 May 14 10:48       Fermi  FahCore_15.exe md5sum=a4c522aac09052ea35e3005c8480c1c3


 * 1410620 May 14 11:30     non-Fermi Core_15.fah    md5sum=7f70f5f694d42dd40be72a30d06e6d38
 * 7094272 May 14 11:30     non-Fermi FahCore_15.exe md5sum=ef5514a851c0dc0d7a3edc43dcf1dfae

Nvidia v2.09 05/20/10 Core_15/Fermi & NonFermi: set keys to gpu set


 * 1367545 May 20 13:28       Fermi  Core_15.fah    md5sum=c8f1435b39acea357b7c0cf846d27bea
 * 4136960 May 20 13:28       Fermi  FahCore_15.exe md5sum=7a3589afe2fd5d3e0a1fa20674d5434c


 * 1410638 May 20 13:27     non-Fermi Core_15.fah    md5sum=ac2aef0474284ca7e046ba78beea4f6b
 * 7094272 May 20 13:27     non-Fermi FahCore_15.exe md5sum=369a37aa19fae584be150547da56e3e7

Nvidia v2.09 07/09/10 Core_16 -- Born radii approximation deactivated


 * 1370504 Jul 9 15:47        Fermi  Core_16.fah    md5sum=494d3f9ac2c502db629c810f93a87f8a
 * 4136960 Jul 9 15:46        Fermi  FahCore_16.exe md5sum=9913c8e1a020afa00bf6933beb90bed0


 * 1295586 Jul 9 15:43      non-Fermi Core_16.fah    md5sum=30ea04dc6342e4bf54b1a55cfca65495
 * 5459968 Jul 9 15:43      non-Fermi FahCore_16.exe md5sum=fd193c5fd93d9bb4e9b3d34495db184b

Nvidia v2.13 11/08/10 Core_15/Core_16 -- Bug in OBC calculation for small end boards/large systems removed (hit when warp=1)(2.11); added diagnostics for identifying problem w/ output of percent completed on restart from checkpoint (2.11); check for nans after completion of main md loop (2.10); simulation time was not being reset correctly after a restart (2.10); non-Fermi version of 2.11 was linked to wrong cuda dlls (2.12)


 * 1.4M Nov 8 13:32        Fermi  Core_15.fah    md5sum=809860e4323ac464413bf4e4c25ddaa1
 * 3.8M Nov 8 13:29        Fermi  FahCore_15.exe md5sum=da235449a46aa7a3b6780a468265dbf4


 * 1.4M Nov 8 13:32        Fermi  Core_16.fah    md5sum=9b269c49c25b62d4cd3c7fba1afe6cb5
 * 3.8M Nov 8 13:29        Fermi  FahCore_16.exe md5sum=51599c503496251ae972bf13f9b37c8c


 * 1.4M Nov 8 13:36        non-Fermi  Core_15.fah    md5sum=fba236df0578f6c89faecf13134710a2
 * 5.0M Nov 8 13:24        non-Fermi FahCore_15.exe  md5sum=c11a7006b121698907578f4b4b3d21c9


 * 1.4M Nov 8 13:36        non-Fermi  Core_16.fah    md5sum=5b5b2bf0ad2384c32e021fe6ad537b7f
 * 5.0M Nov 8 13:24        non-Fermi  FahCore_16.exe md5sum=1e876b53d080944976708a0a0a0e6d57

Nvidia v2.15 11/16/10 Core_15/Core_16 -- Fixed bug in setting of simulation step after resuming from checkpoint file (2.14); changed logic to step_rel >= bLastStep; added centering of molecule for viewer and mods for gui src data_request handling


 * 1.4M Nov 16 09:27       Fermi  Core_15.fah    md5sum=fbb3bc16817a978ebe665ef5d71b23e0
 * 3.8M Nov 16 09:13       Fermi  FahCore_15.exe md5sum=3bf75d28a70ebccf9bc50587167be081


 * 1.4M Nov 16 09:27       Fermi  Core_16.fah    md5sum=07c8c915ab11e35dc6acde4778c72dfc
 * 3.8M Nov 16 09:13       Fermi  FahCore_16.exe md5sum=70f743448dc78b118480528eca0463c6


 * 1.4M Nov 16 09:27       non-Fermi  Core_15.fah    md5sum=f52147c8075a79d02a02f8392e66e829
 * 5.0M Nov 16 09:19       non-Fermi FahCore_15.exe  md5sum=786443cebb8e04b25b65c0fcbb9a4437


 * 1.4M Nov 16 09:27       non-Fermi  Core_16.fah    md5sum=5a1636a34183371adc30eb76e3d262b9
 * 5.0M Nov 16 09:19       non-Fermi  FahCore_16.exe md5sum=a5bd602db92ce0fa40fb653df3400077

Nvidia v2.16 11/18/10 Core_15/Core_16 -- allows donors to set the environment variable, FAH_GPU_IDLE, to idle the board for a percentage of the total time. The goal is to reduce heating problems for larger work units. See v1.26


 * 1.4M Nov 18 11:44       Fermi  Core_15.fah    md5sum=406ebbbdca455f590f32a7f0f223d145
 * 3.8M Nov 18 11:37       Fermi  FahCore_15.exe md5sum=207d3b9b117060d0b01a577adf6455cf


 * 1.4M Nov 18 11:44       Fermi  Core_16.fah    md5sum=577dab5aaece4ddfcd3e894fe5938efe
 * 3.8M Nov 18 11:37       Fermi  FahCore_16.exe md5sum=149f963ff979bf73c310ec9a0b62e48c


 * 1.4M Nov 18 11:26       non-Fermi  Core_15.fah    md5sum=b39585bfa42356211d17b67f6684d77e
 * 5.0M Nov 18 11:19       non-Fermi FahCore_15.exe  md5sum=e580b3e3bd697c7249a016e94f786dd9


 * 1.4M Nov 18 11:26       non-Fermi  Core_16.fah    md5sum=01827c70a48fbde15bb2f7f3f02863d3
 * 5.0M Nov 18 11:19       non-Fermi  FahCore_16.exe md5sum=4831d0be9025294e8406af2a3ef6725d

Nvidia v2.17/2.18 12/13/10 Core_15 -- v2.17: earlier GBSA bug fix may have been omitted -- added back in; v2.18 cosmetic changes to log output; fixes to allow OBC w/ cutoffs


 * 1.4M Dec 13 09:45       Fermi  Core_15.fah    md5sum=9def1bc83e56f2cd06cb0f8f108f8b1c
 * 3.8M Dec 13 09:38       Fermi  FahCore_15.exe md5sum=80fb75fbd15c3497dfbfb38ac940ca3b


 * 1.4M Dec 13 09:45       non-Fermi  Core_15.fah    md5sum=98fa1e179d74319908c9a8fb4021ffda
 * 5.1M Dec 13 09:36       non-Fermi FahCore_15.exe  md5sum=a5a62bec2bba1fa80651d008e1cf14df

Nvidia v2.19 02/16/11 added -gpu flag and Imran's memtest; also fix for initial calculation of Born radii when cutoffs are active


 * 1.5M Feb 16 13:01       Fermi  Core_15.fah    md5sum=6fd9884a41e240d2945223f11a769088
 * 4.5M Feb 16 12:44       Fermi  FahCore_15.exe md5sum=7aad873450ca1cb2e6b56dea1f28c363


 * 1.6M Feb 16 12:59       Core_15.fah       non-Fermi  Core_15.fah    md5sum=c86981d65fe0bd7274b40df1bf429838
 * 6.7M Feb 16 12:46       non-Fermi FahCore_15.exe  md5sum=0e70f280ffa2aaa4790ffbe86a587ee0

Nvidia v2.22 01/03/12 mods for explicit solvent (removed sum of forces ~ 0 test)
 * 1.5M Jan 3 13:45        Fermi  Core_15.fah    md5sum=2935ce7630728e03d1ac74e630fe7a01
 * 4.5M Feb 16 12:44       Fermi  FahCore_15.exe md5sum=5bf78b251d3437b532c89b7f9742aa5a


 * 1.5M Jan 3 13:54        Core_15.fah           md5sum=d868fbea44ff9b954939f97a6ff4432a
 * 4.5M Jan 3 13:26        FahCore_15.exe        md5sum=8a03e1091db086d8040c7ff8ec89b0c1

Nvidia v2.23 02/16/12 Core_16 (Core_15 is being phased out)
 * 2.0M Feb 16 12:08       Core_16.fah    md5sum=8099849541dff7675b77b5d39288122b
 * 8.0M Feb 16 12:04       FahCore_16.exe md5sum=2a74a4f19af6d9e3ad4d5537365abc79

Nvidia v2.24 02/23/12 If FAH_GPU_IDLE is set, then core sleeps every step instead of every 5 time steps.
 * 1.9M Feb 23 14:04       Core_15.fah    md5sum=ca6ef986dbda16de677350c1f6a1bbfb
 * 7.8M Feb 23 13:35       FahCore_15.exe md5sum=b89294c1d73054a47b3aae1cc8eadd04
 * 1.9M Feb 23 14:05       Core_16.fah    md5sum=23ba2c4525919980b5df850822386f00
 * 7.8M Feb 23 14:01       FahCore_16.exe md5sum=e99c98909244e51f9b8dc85ff95309bd

Nvidia v2.25 05/10/12 Ptx code for Kepler should be included; modified logic for FAH_GPU_IDLE; minor bug fixes
 * 1.9M May 10 05:00       Core_15.fah    md5sum=1d59cabeff4eb0e86fd4f139247f009f
 * 7.8M May 10 04:56       FahCore_15.exe md5sum=5653220a35048de50c788dd6ab647018
 * 1.9M May 10 05:00       Core_16.fah    md5sum=f5f44b6494007bdca6d7505f9e478f8a
 * 7.8M May 10 04:56       FahCore_16.exe md5sum=a44abc67ebd9aa93a38315d96811c343

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Links

 * Folding@Home on ATI GPU's: a major step forward (Official GPU FAQ)