2nd cuda card missing

[MarkJ]

2/05/2009 3:34:46 PM		Processor: 8 GenuineIntel Intel(R) Core(TM) i7 CPU         920  @ 2.67GHz [x86 Family 6 Model 26 Stepping 4]
2/05/2009 3:34:46 PM		Processor features: fpu tsc pae nx sse sse2 mmx
2/05/2009 3:34:46 PM		OS: Microsoft Windows XP: Professional x86 Edition, Service Pack 3, (05.01.2600.00)
2/05/2009 3:34:46 PM		Memory: 2.99 GB physical, 4.83 GB virtual
2/05/2009 3:34:46 PM		Disk: 298.08 GB total, 289.71 GB free
2/05/2009 3:34:46 PM		Local time is UTC +10 hours
2/05/2009 3:34:46 PM		CUDA device (not used): GeForce GTX 260 (driver version 18250, compute capability 1.3, 896MB, est. 96GFLOPS)
2/05/2009 3:34:46 PM		CUDA device: GeForce GTX 260 (driver version 18250, compute capability 1.3, 896MB, est. 96GFLOPS)
2/05/2009 3:34:46 PM		Using HTTP proxy p4sdr-vm:3128
2/05/2009 3:34:46 PM		Version change (6.6.23 -> 6.6.25)

Both GTX260's worked fine under 6.6.23, but not under 6.6.25. Clearly a bug with BOINC that has been introduced since 23 as the drivers have not been updated and they both worked fine under 23. Yes I know there is a cc_config flag, but why do I need it now when I didn't before?

[MarkJ]

User Rob Neff on Seti@home has reported the same problem using 181.22 drivers.

[MarkJ]

From a GPUgrid wu done yesterday (using 6.6.23):

# Using CUDA device 1
# Device 0: "GeForce GTX 260"
#  Clock rate: 1242000 kilohertz
#  Total amount of global memory:                 939196416 bytes
#  Number of multiprocessors:                     27
#  Number of cores:                               216
# Device 1: "GeForce GTX 260"
#  Clock rate: 1242000 kilohertz
#  Total amount of global memory:                 939261952 bytes
#  Number of multiprocessors:                     27
#  Number of cores:                               216

It would appear while device 0 is the same, it is being reported as having 64k less memory.

[MarkJ]

Apparently (beta) drivers 185.81 don't show the missing 64k. This would suggest an nVidia driver issue.

[davea]

fixed in [17987]