Hi Everyone,

I updated my Ubuntu 8.10 box to the latest NVidia drivers today, and since then every GPUGrid WU errors with messages similar to this:

<core_client_version>6.4.5</core_client_version>
<![CDATA[
<message>
process exited with code 193 (0xc1, -63)
</message>
<stderr_txt>
# Using CUDA device 0
# Device 0: "GeForce 9800 GT"
# Clock rate: 1512000 kilohertz
# Total amount of global memory: 1073020928 bytes
# Number of multiprocessors: 14
# Number of cores: 112
SIGSEGV: segmentation violation
Stack trace (21 frames):
acemd_6.64_x86_64-pc-linux-gnu__cuda(boinc_catch_signal+0x58)[0x44d6c8]
/lib/libc.so.6[0x7f1e4c3e20a0]
/usr/lib/libcuda.so.1[0x7f1e4d3e0020]
/usr/lib/libcuda.so.1[0x7f1e4d3e5d84]
/usr/lib/libcuda.so.1[0x7f1e4d3af10f]
/usr/lib/libcuda.so.1[0x7f1e4d13ab3b]
/usr/lib/libcuda.so.1[0x7f1e4d14b46b]
/usr/lib/libcuda.so.1[0x7f1e4d133211]
/usr/lib/libcuda.so.1(cuCtxCreate+0xaa)[0x7f1e4d12cfaa]
../../projects/www.gpugrid.net/libcudart.so.2[0x7f1e4cef9d58]
../../projects/www.gpugrid.net/libcudart.so.2[0x7f1e4cefa2a9]
../../projects/www.gpugrid.net/libcudart.so.2(cudaMalloc+0x44)[0x7f1e4cede0e4]
acemd_6.64_x86_64-pc-linux-gnu__cuda[0x41a018]
acemd_6.64_x86_64-pc-linux-gnu__cuda[0x41a15e]
acemd_6.64_x86_64-pc-linux-gnu__cuda[0x41be47]
acemd_6.64_x86_64-pc-linux-gnu__cuda[0x417815]
acemd_6.64_x86_64-pc-linux-gnu__cuda(sin+0x1591)[0x408a11]
acemd_6.64_x86_64-pc-linux-gnu__cuda(sin+0x1815)[0x408c95]
acemd_6.64_x86_64-pc-linux-gnu__cuda(sin+0x28e)[0x40770e]
/lib/libc.so.6(__libc_start_main+0xe6)[0x7f1e4c3cd466]
acemd_6.64_x86_64-pc-linux-gnu__cuda(sinh+0x49)[0x407579]

Exiting...

</stderr_txt>
]]>

The old driver was completely removed and the new one installed properly. Can anyone shed any light on why this would be occurring?

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Proud member of BOINC@AUSTRALIA

Well after 5 days the problem remained, so today I uninstalled the new driver and went back to the old 180.x driver, and the work units are now processing correctly again. It appears that something in the new drivers is causing a SIGSEGV error in Linux.

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Proud member of BOINC@AUSTRALIA

Yep, some incompatibiliy is present. The same situation as yours is on my Kubuntu 9.04 with latest drivers. Today I'll try to rollback.

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From Siberia with love!