Posts by SoNic1967

1) Message boards : Number crunching : GPU version tweaking for current WUs (Message 1101) Posted 4 Mar 2019 by SoNic1967 Post: I have two GPU's in my PC, both nVidia. One a GTX1080 the other a Quadro K2000. How can I set up to run two or more tasks on the GTX1080 but just one on the K2000? Right now the K2000 is at 90%, but the GTX1080 is at 8-12%, based on GPU-Z.
2) Message boards : Bug tracker : AMD GPU works in short bursts (Message 929) Posted 25 Sep 2018 by SoNic1967 Post: I have an AMD FirePro V7900 GPU, on a Windows 10 x64, with the latest drivers (15.201.2401.1010 released on 2/16/2017). This PS is in a dual GPU configuration, with an GTX960, but I don't want to use the nVidia card on that machine (not yet). Well, looking at the GPU-Z sensors, it seems that the ATI works in very short bursts of 100%, followed by long pauses (seconds). The fan is spinning at 45% of rpm's. Any idea what could cause that behavior?
3) Message boards : Number crunching : Auto-ban faulty hosts (Message 922) Posted 19 Sep 2018 by SoNic1967 Post: Canceled 7 nVidia GPU tasks because I removed that GPU from the system. Too slow.
4) Message boards : Number crunching : GPU - Double Precision? (Message 921) Posted 18 Sep 2018 by SoNic1967 Post: Don't understand the tech details, but I see that GPU's with high DP Gflops perf. such as the old HD7950/7970 or R9 280/X are much slower than GTX's 7XX, 9XX, 10X0, ... If you look at MilkyWay@Home stats, you will see these old AMD GPU's are much faster than nVidia's (except Titan , Titan Black, and some Tesla) Can you give links with those examples? That's what I did in my first post.
5) Message boards : Number crunching : Auto-ban faulty hosts (Message 920) Posted 18 Sep 2018 by SoNic1967 Post: I am not receiving any units for: https://sech.me/boinc/Amicable/show_host_detail.php?hostid=52502 I had three nVidia errors because I was testing the Kernel size and at 23 it crashed. LE: All is good now.
6) Message boards : Number crunching : All work is ending in Error (Message 910) Posted 13 Sep 2018 by SoNic1967 Post: Errors stopped on my PC. Good job!
7) Message boards : Number crunching : GPU - Double Precision? (Message 904) Posted 10 Sep 2018 by SoNic1967 Post: Interesting. Yes, 12 is a little excessive. The MULT_ADD cannot be used?
8) Message boards : Number crunching : GPU - Double Precision? (Message 902) Posted 10 Sep 2018 by SoNic1967 Post: Hmm. I don't think that the compiler does that. The results from the first post suggested me that is pushing 64 bit to all of the GPS. Otherwise the discrepancy would be less than it is now, I was expecting more like 3-4x. But I have no experience in this area.
9) Message boards : Number crunching : GPU - Double Precision? (Message 900) Posted 10 Sep 2018 by SoNic1967 Post: How about this discussion, is it applicable? https://stackoverflow.com/questions/28886467/multiplication-of-32-bits-numbers-in-c
10) Message boards : Number crunching : GPU - Double Precision? (Message 898) Posted 10 Sep 2018 by SoNic1967 Post: So if one would convert those 64 bit int to operations with 32 bit (vector array?), it would gain a lot of speed on current GPU's?
11) Message boards : Number crunching : GPU - Double Precision? (Message 896) Posted 10 Sep 2018 by SoNic1967 Post: I have computed the same unit with my RX580 as a Tesla V100 SXM2. RX580 finished the work unit in 1140 seconds. The V100 finished it in 82 seconds, 13.9x faster: https://sech.me/boinc/Amicable/workunit.php?wuid=7557871 Since my card is "rated" 6175 Single / 386 Double (GFlops) and the Tesla is rated 15667 Single / 7830 Double, (2.5x faster in Simple Precision, 20x faster in Double Precision) I assume that this app use a lot of Double Precision calculations. Am I correct in this assumption?
12) Message boards : Number crunching : Newbie questions about the project (Message 895) Posted 9 Sep 2018 by SoNic1967 Post: Got it. I had to create the file cc_config.xml in the Program Data/Boinc directory, file containing the following: <cc_config> <options> <use_all_gpus>1</use_all_gpus> </options> </cc_config>
13) Message boards : Number crunching : Newbie questions about the project (Message 894) Posted 9 Sep 2018 by SoNic1967 Post: I have just started to use Amicable numbers and I have decided to add another video card that I had laying around. Same brand as the first one, weaker performance, but with 2GB of memory. Now... How do I "tell" Boinc/Amicable to use the second card too?