has cuda 7.5 finally caught up to cuda 6.5 speeds? i thought 6.5 was most efficient in mining.
the first of the systems are completing now ...
compiling ccminer-spmod ( which we currently use for the nvidia branch of thefarm ) has compiled flawlessly ...
the performance seems to be slightly better than the c6.5 compiles - in that - they have 'slightly' better numbers at the miner side ...
the rest of the machines are yet to finalize the full upgrade to f22x64 - which will then be upgraded to c7.5 ... so the testing will be ongoing for the rest of the day when it is completed ...
so far though - the results look quite promising AND the compilations are not broken ... ie - there seem to be no 'cpu validation errors' compiling with c7.5 as opposed to compiling with c7.0.28 - which was broken in more ways that just 'cpu validation errors' ... that version gave poor hashrates and the majority of algos just refused to work properly - being erroneous in many different ways ...
an example - using thefarm gigabyte 750ti oc lp cards ... test machine ( 6 x gigabyte 750ti oc lp - stock with NO oc - as that is how we test ALL the units ) using ccminer-spmod v70 compiled in f20x64c6.5 gave an average hashrate of 34700KH ... f22x64c7.5 is giving an average hashrate of ( and this is current as of writing ) 34770KH ... as seen below ...
[2015-10-10 12:20:37] mining-ace.granitecoin.com:6002/ quark block 2287534
[2015-10-10 12:20:37] GPU #3: GeForce GTX 750 Ti, 5799 (T= 79C F= 65% C=1176/2700)
[2015-10-10 12:20:37] GPU #1: GeForce GTX 750 Ti, 5824 (T= 79C F= 64% C=1176/2700)
[2015-10-10 12:20:37] GPU #0: GeForce GTX 750 Ti, 5631 (T= 80C F= 65% C=1097/2700)
[2015-10-10 12:20:37] GPU #2: GeForce GTX 750 Ti, 5886 (T= 79C F= 65% C=1137/2700)
[2015-10-10 12:20:37] GPU #4: GeForce GTX 750 Ti, 5861 (T= 80C F= 65% C=1150/2700)
[2015-10-10 12:20:37] GPU #5: GeForce GTX 750 Ti, 5787 (T= 79C F= 64% C=1150/2700)
[2015-10-10 12:20:43] GPU #4: GeForce GTX 750 Ti, 5845 (T= 80C F= 65% C=1137/2700)
[2015-10-10 12:20:44] accepted: 507/510 (99.41%), 34770 kH/s yes!
[2015-10-10 12:20:49] GPU #1: GeForce GTX 750 Ti, 5834 (T= 79C F= 64% C=1163/2700)
[2015-10-10 12:20:49] accepted: 508/511 (99.41%), 34771 kH/s yes!
i must admit - that the test machine surprised me - as i did not expect that it would perform so well ... as c7.0 was a broken release ...
when the devs release code specific to c7.5 - i believe it will be a far better performance level that what we are seeing at the moment ... especially when you consider that nvidia themselves have resolved a great many issues within the compilation sphere of cuda 7.5 ...
so in answer to your question - yes ... i believe that c7.5 has not only caught up to c6.5 hashing speeds - but if this test is anything to go by - has surpassed them ... and that is still using the current code optimizations that are intended for c6.5 that the devs release - as far as i know ...
which is why after 12 hours of testing - thefarm is being fully upgraded to take advantage of not only the optimizations - but also the current compilation advances ...
and in fedora 22 x64 - it seems to work flawlessly ...
btw - the amd branch of thefarm is no longer being used publicly for rental ... it is now exclusively internal - and for the projects that are assigned to it by the dev involved ...
the amd branch is also currently being updated to f22x64 with catalyst v15.7 and sgminer 5.1.1-19-g8bf1-dirty ( modified sgminer-dev git - for use with the specialized / optimized binaries ) ...
the amd branch is a little more complex to upgrade incomparison to nvidia - as amd are notorious for a slow ( if ever ) release of linux drivers ... as such - the install needs to be 'hacked' into existence using kde instead of gnome as well as an earlier version of x11 ( the xorg version - not the algo ) and the earlier version of the catalyst driver - not the latest ...
that being said - the full upgrade should be finished by tonight - and hopefully fully functional by tomorrow ( sunday ) morning ... when i will hopefully get some sleep
...
#crysx