Re: All CUDA devices are in prohibited mode, of compute capability 1.0, or otherwise unusable.

From: Lucas (lucasbleicher_at_gmail.com)
Date: Wed Aug 14 2013 - 17:09:56 CDT

ldd returns:
linux-vdso.so.1 => (0x00007fffe39ff000)
    libpthread.so.0 => /lib64/libpthread.so.0 (0x0000003049200000)
    libdl.so.2 => /lib64/libdl.so.2 (0x0000003048e00000)
    libcudart.so.4 => not found
    libm.so.6 => /lib64/libm.so.6 (0x0000003049600000)
    libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x0000003055a00000)
    libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x0000003054a00000)
    libc.so.6 => /lib64/libc.so.6 (0x0000003048a00000)
    /lib64/ld-linux-x86-64.so.2 (0x0000003048600000)

nvidia-smi q g 0 actually returns an error (Invalid combination of
input arguments), but I've included the full output from a
"nvidia-smi -q" in the end of the e-mail.

I was fiddling with the command line options this morning and found
out that the program actually runs if I include the +devices directive
(I thought that namd would simply assume it would be "+devices all" if
that option was not used). What is weird about it is that the
benchmark times for four processors and the GPU are actually much
slower than simply using the four processors (even if I use a very
high value for outputEnergies, such as 500). I know the Quadro 600
isn't one of the most powerful cards around, but it still weird to see
such performance (about 3days/ns with CPUs only, 3.6 days/ns when
using +devices 0).

==========================================
Output from nvidia-smi -q:

Timestamp : Wed Aug 14 11:20:21 2013
Driver Version : 319.37

Attached GPUs : 1
GPU 0000:01:00.0
    Product Name : Quadro 600
    Display Mode : Enabled
    Display Active : Enabled
    Persistence Mode : Disabled
    Accounting Mode : N/A
    Accounting Mode Buffer Size : N/A
    Driver Model
        Current : N/A
        Pending : N/A
    Serial Number : N/A
    GPU UUID : GPU-0fb91d62-ad2d-2b61-a988-91870abafeb1
    VBIOS Version : 70.08.88.00.01
    Inforom Version
        Image Version : N/A
        OEM Object : N/A
        ECC Object : N/A
        Power Management Object : N/A
    GPU Operation Mode
        Current : N/A
        Pending : N/A
    PCI
        Bus : 0x01
        Device : 0x00
        Domain : 0x0000
        Device Id : 0x0DF810DE
        Bus Id : 0000:01:00.0
        Sub System Id : 0x083510DE
        GPU Link Info
            PCIe Generation
                Max : 2
                Current : 1
            Link Width
                Max : 16x
                Current : 16x
    Fan Speed : 30 %
    Performance State : P12
    Clocks Throttle Reasons : N/A
    Memory Usage
        Total : 1023 MB
        Used : 68 MB
        Free : 955 MB
    Compute Mode : Default
    Utilization
        Gpu : 0 %
        Memory : 12 %
    Ecc Mode
        Current : N/A
        Pending : N/A
    ECC Errors
        Volatile
            Single Bit
                Device Memory : N/A
                Register File : N/A
                L1 Cache : N/A
                L2 Cache : N/A
                Texture Memory : N/A
                Total : N/A
            Double Bit
                Device Memory : N/A
                Register File : N/A
                L1 Cache : N/A
                L2 Cache : N/A
                Texture Memory : N/A
                Total : N/A
        Aggregate
            Single Bit
                Device Memory : N/A
                Register File : N/A
                L1 Cache : N/A
                L2 Cache : N/A
                Texture Memory : N/A
                Total : N/A
            Double Bit
                Device Memory : N/A
                Register File : N/A
                L1 Cache : N/A
                L2 Cache : N/A
                Texture Memory : N/A
                Total : N/A
    Retired Pages
        Single Bit ECC : N/A
        Double Bit ECC : N/A
        Pending : N/A
    Temperature
        Gpu : 49 C
    Power Readings
        Power Management : N/A
        Power Draw : N/A
        Power Limit : N/A
        Default Power Limit : N/A
        Enforced Power Limit : N/A
        Min Power Limit : N/A
        Max Power Limit : N/A
    Clocks
        Graphics : 50 MHz
        SM : 101 MHz
        Memory : 135 MHz
    Applications Clocks
        Graphics : N/A
        Memory : N/A
    Default Applications Clocks
        Graphics : N/A
        Memory : N/A
    Max Clocks
        Graphics : 641 MHz
        SM : 1282 MHz
        Memory : 800 MHz
    Compute Processes : None

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