cuda pyrit 8800 gtx x2

[mizzion]

hey guys

been away from this for a bit.

installed bt5 r3 on my pc

installed and setup cuda/pyrit with my 8800 gtx, pyrit lists my core fine and can run via the gpu. i have now picked up a second 8800 gtx

my questions are:

do i need to sli the cards? i thought it would work fine without because it maps a gpu to a cpu so why would u sli them....
do i need to configure anything so the software can see and utilize the second 8800 gtx card?

[Jimmy87]

not massively clued up on it, but this may help you;
http://www.offensive-security.com/do...cuda-guide.pdf
seems to be based around using two 8800GT cards.

[mizzion]

not massively clued up on it, but this may help you;
http://www.offensive-security.com/do...cuda-guide.pdf
seems to be based around using two 8800GT cards.

cheers for the doc jimmy, i used this ages ago when i found out about it. doesnt really tell me what i need to know sadly. anyone else got experience?

[raskolnikov]

Hello,
Pyrit does support SLI and your cards should be put into SLI. You still require a CPU per GPU but the trade-off is well worth it. I believe the reason for using SLI in this scenario is to reduce bandwidth constraints. The two cards will act together to give you massive amounts of parallel processing, but I believe do some sort of pooling to achieve this. Pyrit will still recognize them as separate GPUs but they will act together to accomplish their mission. Someone feel free to correct me if I am wrong, but that is my understanding. Even if it is possible to not set them up in SLI I would recommend, again, to avoid bandwidth constraints. (Again, correct me if I am wrong.)

[Jimmy87]

cheers for the doc jimmy, i used this ages ago when i found out about it. doesnt really tell me what i need to know sadly. anyone else got experience?

No problem, I just figured as there was no mention of anything "special" to make the software utilise the second card that it would just apply!
Out of my depth now tho sorry, good luck

http://stackoverflow.com/questions/1...-multiple-gpus

One last link I stumbled across, may help you out...