how to list GPUs for Jean-Luc's Poolard Algo on Linux

Anyone know how to list GPUs in Linux? I'm trying to run this command but it keeps throwing an error: ./kangaroo -gpu gpuId0,gpuId1,gpuId2,gpuId3,gpuId4,gpuId5,gpuId6,gpuId7 -ws savedKangs.txt -wi 30 in.txt Kangaroo v2.2 Getting this error: Unexpected gpuId0,gpuId1,gpuId2,gpuId3,gpuId4,gpuId5,gpuId6,gpuId7 argument. Thanks!

Drop the gpuIdX labels because Kangaroo wants only plain integers. List the devices with nvidia-smi -L or clinfo -l. Then run something like a ./kangaroo -gpu 0,1,2,3,etc. -ws saverKangeroozer.txt -wi 30 input.txt

I give you suggestion on different thread 2 days ago? Is it not working? If so, please mention it so other member can avoid giving same suggestion.

Thank you for your reply !! Sorry I missed your other reply, thank you for your replies !! Thank you @flapduck and @ABCbits for your replies, I got it to run !! on a similar track, I have been told that Pollar RHO is 256 bits capable while Jean-Lucs is not. Do you know or are aware of a reliable Pollard Rho GPU capable implementation that you can recommend in github or similar. I have seen a couple there but they seems "sketchy" code wise .. Thank you. [moderator's note: consecutive posts merged]

Do you mean that it's capable of searching 256-bit private key? If this is for the puzzle transaction, it doesn't matter if it can't since those output's private keys are just limited to lower ranges. For a list of similar tools, try this thread: https://bitcointalk.org/index.php?topic=5422375.0

Thank you @nc50lc !!