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MemberActivity: 73Merit: 10 [XPM] A GPU miner for XPM is around the corner? (via CUMP). July 17, 2013, 05:59:21 AM #1



And I googled "GMP GPU" and found this CUMP



Anyone worked with this CUMP library before? it there any blockers for this? or is someone already working on it? As you know mikaelh's build uses GMP to do the BigNum calculation, which gives a huge performance boost.And I googled "GMP GPU" and found this CUMP http://www.hpcs.cs.tsukuba.ac.jp/~nakayama/cump/ which basically is a CUDA version of GMP. So it's reasonable to assume that a build using CUDA is very easy to make. according to this http://www.hpcs.cs.tsukuba.ac.jp/~nakayama/cump/index.php?CUMP%20Performance%20Evaluation , it wouldn't be so dramatic compared to the GPU revolution happened to the other coins.Anyone worked with this CUMP library before? it there any blockers for this? or is someone already working on it?

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MemberActivity: 73Merit: 10 Re: [XPM] A GPU miner for XPM is around the corner? (via CUMP). July 17, 2013, 04:31:59 PM #10



http://trone.di.fc.ul.pt/images/e/e2/ASAP11-paper.pdf



GTS8800 [17] GTX8800 [10] GTX260 (This paper) GTX580 [39] Intel W3565 [46] AMD Phenom II 1090T [46]

Cores 112 128 192 512 4 6

Frequency (MHz) 1188 1350 1294 1544 3200 3200

Price (USD) 250 173 100 500 300 200

TDP (W) 150 155 202 244 130 125

GFLOPS 399 518 715 1581 102 153

Modexp/s 6504 11074 41426 149464 32608 77002

Modexp/s (scaled) 13052 15282 41426 46973 N/A N/A

Modexp/s/W 43 71 205 612 250 616

Modexp/s/USD 26 64 414 298 131 385

Table I

COMPARISONS OF MODULAR EXPONENTIATION PERFORMANCES ON VARIOUS CPU AND GPU IMPLEMENTATIONS. Another paper with a nice table, gives you some idea on how things will go.GTS8800 [17] GTX8800 [10] GTX260 (This paper) GTX580 [39] Intel W3565 [46] AMD Phenom II 1090T [46]Cores 112 128 192 512 4 6Frequency (MHz) 1188 1350 1294 1544 3200 3200Price (USD) 250 173 100 500 300 200TDP (W) 150 155 202 244 130 125GFLOPS 399 518 715 1581 102 153Modexp/s 6504 11074 41426 149464 32608 77002Modexp/s (scaled) 13052 15282 41426 46973 N/A N/AModexp/s/W 43 71 205 612 250 616Modexp/s/USD 26 64 414 298 131 385Table ICOMPARISONS OF MODULAR EXPONENTIATION PERFORMANCES ON VARIOUS CPU AND GPU IMPLEMENTATIONS.

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Sr. MemberActivity: 294Merit: 250 Re: [XPM] A GPU miner for XPM is around the corner? (via CUMP). July 17, 2013, 04:43:05 PM #11 Quote from: oxfeeefeee on July 17, 2013, 04:31:59 PM



http://trone.di.fc.ul.pt/images/e/e2/ASAP11-paper.pdf



GTS8800 [17] GTX8800 [10] GTX260 (This paper) GTX580 [39] Intel W3565 [46] AMD Phenom II 1090T [46]

Cores 112 128 192 512 4 6

Frequency (MHz) 1188 1350 1294 1544 3200 3200

Price (USD) 250 173 100 500 300 200

TDP (W) 150 155 202 244 130 125

GFLOPS 399 518 715 1581 102 153

Modexp/s 6504 11074 41426 149464 32608 77002

Modexp/s (scaled) 13052 15282 41426 46973 N/A N/A

Modexp/s/W 43 71 205 612 250 616

Modexp/s/USD 26 64 414 298 131 385

Table I

COMPARISONS OF MODULAR EXPONENTIATION PERFORMANCES ON VARIOUS CPU AND GPU IMPLEMENTATIONS.

Another paper with a nice table, gives you some idea on how things will go.GTS8800 [17] GTX8800 [10] GTX260 (This paper) GTX580 [39] Intel W3565 [46] AMD Phenom II 1090T [46]Cores 112 128 192 512 4 6Frequency (MHz) 1188 1350 1294 1544 3200 3200Price (USD) 250 173 100 500 300 200TDP (W) 150 155 202 244 130 125GFLOPS 399 518 715 1581 102 153Modexp/s 6504 11074 41426 149464 32608 77002Modexp/s (scaled) 13052 15282 41426 46973 N/A N/AModexp/s/W 43 71 205 612 250 616Modexp/s/USD 26 64 414 298 131 385Table ICOMPARISONS OF MODULAR EXPONENTIATION PERFORMANCES ON VARIOUS CPU AND GPU IMPLEMENTATIONS.

looking at the numbers, looks like GPU is only around 2x CPU??? looking at the numbers, looks like GPU is only around 2x CPU??? ZenithCoin - Sustainable Scrypt Based Crypto Currency

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MemberActivity: 73Merit: 10 Re: [XPM] A GPU miner for XPM is around the corner? (via CUMP). July 17, 2013, 05:06:45 PM

Last edit: July 17, 2013, 05:19:25 PM by oxfeeefeee #14 Quote from: solracx on July 17, 2013, 04:43:05 PM Quote from: oxfeeefeee on July 17, 2013, 04:31:59 PM



http://trone.di.fc.ul.pt/images/e/e2/ASAP11-paper.pdf



GTS8800 [17] GTX8800 [10] GTX260 (This paper) GTX580 [39] Intel W3565 [46] AMD Phenom II 1090T [46]

Cores 112 128 192 512 4 6

Frequency (MHz) 1188 1350 1294 1544 3200 3200

Price (USD) 250 173 100 500 300 200

TDP (W) 150 155 202 244 130 125

GFLOPS 399 518 715 1581 102 153

Modexp/s 6504 11074 41426 149464 32608 77002

Modexp/s (scaled) 13052 15282 41426 46973 N/A N/A

Modexp/s/W 43 71 205 612 250 616

Modexp/s/USD 26 64 414 298 131 385

Table I

COMPARISONS OF MODULAR EXPONENTIATION PERFORMANCES ON VARIOUS CPU AND GPU IMPLEMENTATIONS.

Another paper with a nice table, gives you some idea on how things will go.GTS8800 [17] GTX8800 [10] GTX260 (This paper) GTX580 [39] Intel W3565 [46] AMD Phenom II 1090T [46]Cores 112 128 192 512 4 6Frequency (MHz) 1188 1350 1294 1544 3200 3200Price (USD) 250 173 100 500 300 200TDP (W) 150 155 202 244 130 125GFLOPS 399 518 715 1581 102 153Modexp/s 6504 11074 41426 149464 32608 77002Modexp/s (scaled) 13052 15282 41426 46973 N/A N/AModexp/s/W 43 71 205 612 250 616Modexp/s/USD 26 64 414 298 131 385Table ICOMPARISONS OF MODULAR EXPONENTIATION PERFORMANCES ON VARIOUS CPU AND GPU IMPLEMENTATIONS.

looking at the numbers, looks like GPU is only around 2x CPU???

looking at the numbers, looks like GPU is only around 2x CPU???

Yes it seems so, and the performance/watt is basically at the same level. But you can't just plug 6 AMD CPUs to a single rig like what you'd do with GPUs.



I'm guessing this is because CPUs have AVX which is 256 bit, and that makes them very good at dealing with big numbers compared to GPUs which can only support 64bit natively. Yes it seems so, and the performance/watt is basically at the same level. But you can't just plug 6 AMD CPUs to a single rig like what you'd do with GPUs.I'm guessing this is because CPUs have AVX which is 256 bit, and that makes them very good at dealing with big numbers compared to GPUs which can only support 64bit natively.

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NewbieActivity: 23Merit: 0 Re: [XPM] A GPU miner for XPM is around the corner? (via CUMP). July 18, 2013, 01:21:48 AM #16



http://eecm.cr.yp.to/gpuecm-20090127.pdf



modular arithmetic is very easy to implement with the four basic arithmetic functions, so I'm not sure what the holdup is around that?

Here is a few year old example where an implementation of ECM was developed and compared against the standard CPU and the result was roughly 2x faster. I know we're not talking about ECM here but again it's suggestive of what one might expect.modular arithmetic is very easy to implement with the four basic arithmetic functions, so I'm not sure what the holdup is around that?