Ya está la placa GTX570 funcionando en un Ubuntu. Posiblemente sea necesario realizar la instalación para Windows dado que muchos de los sensores y actuadores se comunican usando drivers propietarios de Windows.
Se instaló CUDA Tools y Toolkit versión 4.0 (release candidate 2, mejor arrancar con el soft de vanguardia dado que lo tienen casi en una versión productiva) junto con el GPU SDK examples de Nvidia (
ver).
Linux
Luego de instalar todos los paquetes necesarios (libgl1-mesa-dev, libgl1-mesa-dri, libglu-mesa-dev, freeglut3-dev, libxmu-dev, libxi-dev, etc) y de instalar/reinstalar los drivers y toolkits de Nvidia varias veces llegamos a la primera compilación. Obviamente se trata de ejemplos pre-armados, dentro del SDK. Compilamos y corremos algunos tests como deviceQuery y bandwidthTest:
cd ~/workspace/NVIDIA_GPU_Computing_SDK
make
cd C/bin/linux/release
./deviceQuery
./deviceQuery Starting...
CUDA Device Query (Runtime API) version (CUDART static linking)
There is 1 device supporting CUDA
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: 3 / 0
Compute Mode:
< Default (multiple host threads can use ::cudaSetDevice() with device simultaneously) >
deviceQuery, CUDA Driver = CUDART, CUDA Driver Version = 4.0, CUDA Runtime Version = 4.0, NumDevs = 1, Device = GeForce GTX 570
[./deviceQuery] test results...
PASSED
./bandwidthTest
./bandwidthTest Starting...
Running on...
Device 0: GeForce GTX 570
Quick Mode
Host to Device Bandwidth, 1 Device(s), Paged memory
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 2961.9
Device to Host Bandwidth, 1 Device(s), Paged memory
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 2753.8
Device to Device Bandwidth, 1 Device(s)
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 130016.2
[./bandwidthTest] test results...
PASSED
Win7
La instalación demoró muchísimo menos tiempo (menos de dos horas totales) comparada con la instalación en Linux (unas 12 horas de lucha).
El deviceQuery entrega CASI los mismos resultados. Hay diferencia en
Run time limit on kernels: Yes
Device supports Unified Addressing (UVA): No
que luego investigaremos.
Por otro lado, el bandwidthTest entrega:
Host to Device Bandwidth, 1 Device(s), Paged memory
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 2521.2
Device to Host Bandwidth, 1 Device(s), Paged memory
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 2551.9
Device to Device Bandwidth, 1 Device(s)
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 130377.2
que claramente ofrece menos performance que en la versión Linux.
