许多CUDA示例失败

Question

安装新的CUDA 4.0驱动程序和SDK后，许多SDK测试失败（例如fastWalshTransform, matrixMul, reduction）。这是./deviceQuery：

Device 0: "GeForce GTX 570" 
    CUDA Driver Version/Runtime Version   4.0/4.0 
    CUDA Capability Major/Minor version number: 2.0 
    Total amount of global memory:     1279 MBytes (1341325312 bytes) 
    (15) Multiprocessors x (32) CUDA Cores/MP:  480 CUDA Cores 
    GPU Clock Speed:        1.57 GHz 
    Memory Clock rate:        2100.00 Mhz 
    Memory Bus Width:        320-bit 
    L2 Cache Size:         655360 bytes 
    Max Texture Dimension Size (x,y,z)    1D=(65536), 2D=(65536,65535), 3D=(2048,2048,2048) 
    Max Layered Texture Size (dim) x layers  1D=(16384) x 2048, 2D=(16384,16384) x 2048 
    Total amount of constant memory:    65536 bytes 
    Total amount of shared memory per block:  49152 bytes 
    Total number of registers available per block: 32768 
    Warp size:          32 
    Maximum number of threads per block:   1024 
    Maximum sizes of each dimension of a block: 1024 x 1024 x 64 
    Maximum sizes of each dimension of a grid:  65535 x 65535 x 65535 
    Maximum memory pitch:       2147483647 bytes 
    Texture alignment:        512 bytes 
    Concurrent copy and execution:     Yes with 1 copy engine(s) 
    Run time limit on kernels:      No 
    Integrated GPU sharing Host Memory:   No 
    Support host page-locked memory mapping:  Yes 
    Concurrent kernel execution:     Yes 
    Alignment requirement for Surfaces:   Yes 
    Device has ECC support enabled:    No 
    Device is using TCC driver mode:    No 
    Device supports Unified Addressing (UVA):  Yes 
    Device PCI Bus ID/PCI location ID:   4/0 

例如，的reduction输出是：

• GPU结果= 2135772699
• CPU结果= 2139353471

=>FAILED。

解决方案：这是（现在仍然是）硬件问题（驱动程序更新无法解决问题）。也许有些记忆问题，但相当普遍。我们有几张显示这个问题的NVIDIA显卡（甚至是特斯拉！）。目前唯一的解决方案是重新启动机器或稍微提高电压。

Answer 1

这是（现在仍然是）硬件问题（驱动程序更新不能解决问题）。也许有些记忆问题，但相当普遍。我们有几张显示这个问题的NVIDIA显卡（甚至是特斯拉！）。目前唯一的解决方案是重新启动机器或稍微提高电压。