I am running Ubuntu 8.10 64-bit. I have boinc_6.4.5_x86_64-pc-linux-gnu installed. It finds my 9400 GT as a CUDA device. I have preferences set to use the GPU if available. When I am running the client it uses just my 2 cores of my CPU. I see this in my system manager and with the fact that my GPU temp never goes up when the projects are running. What is messed up or what setting needs to be changed for it to use my GPU?

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At this moment the only operating system that has a CUDA capable application is Windows. Neither *nix, nor Mac have an application out yet and thus aren't supported.

You may want to try to compile it your self from source, but to be honest, I would wait until the developers have knocked out most of the bugs.

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Log of loading boinc Ubuntu 8.10 (32 bit):
root@desktop:/usr/bin# ./boinc
13-Jan-2009 00:58:29 [---] Starting BOINC client version 6.4.5 for i686-pc-linux-gnu
13-Jan-2009 00:58:29 [---] log flags: task, file_xfer, sched_ops
13-Jan-2009 00:58:29 [---] Libraries: libcurl/7.18.2 OpenSSL/0.9.8g zlib/1.2.3.3 libidn/1.8
13-Jan-2009 00:58:29 [---] Data directory: /usr/bin
13-Jan-2009 00:58:29 [---] Processor: 2 GenuineIntel Intel(R) Core(TM)2 Duo CPU E4500 @ 2.20GHz [Family 6 Model 15 Stepping 13]
13-Jan-2009 00:58:29 [---] Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl est tm2 ssse3 cx16 xtpr lahf_lm
13-Jan-2009 00:58:29 [---] OS: Linux: 2.6.27-9-generic
13-Jan-2009 00:58:29 [---] Memory: 1.98 GB physical, 5.79 GB virtual
13-Jan-2009 00:58:29 [---] Disk: 45.84 GB total, 37.24 GB free
13-Jan-2009 00:58:29 [---] Local time is UTC +3 hours
13-Jan-2009 00:58:29 [---] Not using a proxy
13-Jan-2009 00:58:29 [---] CUDA devices found
13-Jan-2009 00:58:29 [---] Coprocessor: GeForce 8600 GT (1)
13-Jan-2009 00:58:29 [---] No general preferences found - using BOINC defaults
13-Jan-2009 00:58:29 [---] Preferences limit memory usage when active to 1011.56MB
13-Jan-2009 00:58:29 [---] Preferences limit memory usage when idle to 1820.82MB
13-Jan-2009 00:58:32 [---] Preferences limit disk usage to 10.00GB
13-Jan-2009 00:59:01 [---] [error] GUI RPC bind failed: 98
gstate.init() failed: -180

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Log of loading boinc Ubuntu 8.10 (32 bit):
13-Jan-2009 00:58:29 [---] CUDA devices found
13-Jan-2009 00:58:29 [---] Coprocessor: GeForce 8600 GT (1)

I think that is a routine in BM that detects Cuda-Devices and do not mean there is a application out to use it ...

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