Dsfyu



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MemberActivity: 75Merit: 10 Re: [XPM] Working on a GPU miner for Primecoin July 29, 2013, 02:54:22 AM #282 Quote from: mtrlt on July 29, 2013, 01:24:04 AM Alright, I have written the GPU code for the sieve. It compiles, but I haven't gotten to test it yet. I have to code the OpenCL interface first. I can't really use my existing code since all the other coins are "GPU does all the work", but the Primecoin miner is currently "CPU and GPU work together". The ultimate plan is, of course, to do everything on the GPU, but that's not gonna be the case in the first betas.



Thanks for the update! It's really refreshing to see this much communication when some other bitcoin merchants and individuals barely communicate at all. I know a few people that got money tied up in bitfloor back in april and they went up until about two weeks ago with no updates on when they might see their money again. You on the other hand have been giving regular updates about your work that people aren't even going to pay for when it goes live. I can't wait for this to go live just to see the results and what it means for this new growing cryptocurrency. If I had the BTC to get into the beta I would definitely donate it. With that said, when this gets out of beta I would be happy to support your work by donating the fractions of a bitcoin I have from selling my primecoins.



Gread job so far - I can't wait to see what you have when the beta is released tomorrow! Thanks for the update! It's really refreshing to see this much communication when some other bitcoin merchants and individuals barely communicate at all. I know a few people that got money tied up in bitfloor back in april and they went up until about two weeks ago with no updates on when they might see their money again. You on the other hand have been giving regular updates about your work that people aren't even going to pay for when it goes live. I can't wait for this to go live just to see the results and what it means for this new growing cryptocurrency. If I had the BTC to get into the beta I would definitely donate it. With that said, when this gets out of beta I would be happy to support your work by donating the fractions of a bitcoin I have from selling my primecoins.Gread job so far - I can't wait to see what you have when the beta is released tomorrow!

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LegendaryActivity: 952Merit: 1000 Re: [XPM] Working on a GPU miner for Primecoin July 29, 2013, 03:28:30 PM

Last edit: July 29, 2013, 06:01:31 PM by Bogart #285



Do you think any of this work can be used towards an FPGA solution? Sounds like good progress. Donated.Do you think any of this work can be used towards an FPGA solution? "All safe deposit boxes in banks or financial institutions have been sealed... and may only be opened in the presence of an agent of the I.R.S." - President F.D. Roosevelt, 1933

mtrlt



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MemberActivity: 104Merit: 10 Re: [XPM] Working on a GPU miner for Primecoin July 30, 2013, 02:10:16 AM #291 Okay, the first GPU-enabled version is ready. Right now it only does the sieving on the GPU. Primality tests are still done on the CPU. The code hasn't been optimized at all yet; the performance is equivalent (+- a few %) on these setups:

1) Phenom x6 1055T, all 6 cores

2) Phenom x6 1055T, all 6 cores, plus a HD6990 using both cores



I don't think the current version is worth releasing. It still needs a bit of work, I want it to be twice as fast. I estimate there is room for a five-fold improvement, especially when I get the primality tests done on the GPU as well.



Tomorrow I will do tests using a slow CPU with lots of GPU power (Sempron 140 with 2x6990).



Dsfyu



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MemberActivity: 75Merit: 10 Re: [XPM] Working on a GPU miner for Primecoin July 30, 2013, 02:28:36 AM #294 Quote from: mtrlt on July 30, 2013, 02:10:16 AM Okay, the first GPU-enabled version is ready. Right now it only does the sieving on the GPU. Primality tests are still done on the CPU. The code hasn't been optimized at all yet; the performance is equivalent (+- a few %) on these setups:

1) Phenom x6 1055T, all 6 cores

2) Phenom x6 1055T, all 6 cores, plus a HD6990 using both cores



I don't think the current version is worth releasing. It still needs a bit of work, I want it to be twice as fast. I estimate there is room for a five-fold improvement, especially when I get the primality tests done on the GPU as well.



Tomorrow I will do tests using a slow CPU with lots of GPU power (Sempron 140 with 2x6990).



That's better than I expected - don't most projects like this have worse performance when they first start working than the equivalent? I remember valve talking about optimizing left 4 dead for linux and saying they were getting 2-3 fps on linux when it first started running compared to 200 fps on the same machine in windows.



Maybe it would help to have someone test this on a machine with an intel processor too - sometimes the proc brand can make a pretty big difference even when two procs are equivalent in performance overall. That's better than I expected - don't most projects like this have worse performance when they first start working than the equivalent? I remember valve talking about optimizing left 4 dead for linux and saying they were getting 2-3 fps on linux when it first started running compared to 200 fps on the same machine in windows.Maybe it would help to have someone test this on a machine with an intel processor too - sometimes the proc brand can make a pretty big difference even when two procs are equivalent in performance overall.

Disclaimer: I am a noob. Assume I know nothing until proven otherwise. Don't just trade, get paid to Atomic⚛Trade !!! Disclaimer: I am a noob. Assume I know nothing until proven otherwise.