PCI bandwidth test

[Trek]

Na forech nvidia jsem vzal ten kod a naportoval ho do win. Kdo neveri pribaleny binarce, muze si to zkompilovat sam. Pouziti:

concBandwidthTest 0 1 ...

ty cisla jsou jednotlivy karty

Je to pres cuda, takze jen nvidie.

Muj vysledek (790i, E8500, GTX295, 9800GTX):

Kód: Vybrat vše

concBandwidthTest\Release>concBandwidthTest.exe 0 1 2
Device 0 took 3029.114258 ms
Device 1 took 3112.066895 ms
Device 2 took 2594.390869 ms
Average HtoD bandwidth in MB/s: 6636.200278
Device 0 took 2987.690186 ms
Device 1 took 3083.276611 ms
Device 2 took 2104.550781 ms
Average DtoH bandwidth in MB/s: 7258.865927

Z nasledujiciho testu vyplyva, ze je uplne fuk, jestli mam dualni kartu nebo dve karty, pokud budou mit stejny frekvence, tak to pojede temer stejne, rozdil je mizivej.

Kód: Vybrat vše

(GTX 295, 9800GTX - ruzne sloty)
concBandwidthTest.exe 0 1
Device 0 took 2060.707764 ms
Device 1 took 2039.954956 ms
Average HtoD bandwidth in MB/s: 6243.053242
Device 0 took 2050.849854 ms
Device 1 took 2025.542725 ms
Average DtoH bandwidth in MB/s: 6280.304515

(GTX 295, soubezne obe pameti)
concBandwidthTest.exe 0 1
Device 0 took 2102.058838 ms
Device 1 took 2146.338623 ms
Average HtoD bandwidth in MB/s: 6026.456219
Device 0 took 1962.927246 ms
Device 1 took 2059.891602 ms
Average DtoH bandwidth in MB/s: 6367.396290