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Message boards : Number crunching : Optimization
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Hello and from me. | |
ID: 1067 · Reply Quote | |
The server initially sends you all 3 flavors, after you return some results for each it decides which is the best for you and would usually send you WUs tagged for just one app version. | |
ID: 1068 · Reply Quote | |
So....what is the difference between default app which i download automatic (for example gene_pcim_v1.02_win64__fma) and the same one fma from the link and the archive? If i saw right both are version 1.02? Which one i must use for better performance? | |
ID: 1069 · Reply Quote | |
I asked rattorosso [Marche] to create apps for remaining 3 ARM architectures: armv6_vfp, armv7_vfpv3 and aarch64. He send them to me, and I uploaded them in usual place: https://bitbucket.org/sirzooro/pc-boinc/downloads/. Feel free to download and test them too. So....what is the difference between default app which i download automatic (for example gene_pcim_v1.02_win64__fma) and the same one fma from the link and the archive? If i saw right both are version 1.02? Which one i must use for better performance? Both internally specify the same version 1.02, but version from this thread has extra optimizations so it runs faster than official one. Valterc is going to take it and release as a new version of official one at end of May. ____________ | |
ID: 1070 · Reply Quote | |
Both internally specify the same version 1.02, but version from this thread has extra optimizations so it runs faster than official one. Valterc is going to take it and release as a new version of official one at end of May. I tested on my pc and there is the result (for some reason on my pc the SSE2 app is fastest app. CPU - i7 4790, 32GB RAM @1600MHz): 1. the official app SDSE2: Run time: 27 min 39 sec; CPU time: 27 min 30 sec; 2. the optimized app SSE2: Run time: 28 min 17 sec; CPU time: 27 min 43 sec; | |
ID: 1071 · Reply Quote | |
Hi | |
ID: 1076 · Reply Quote | |
I tested 3x the same 16 WUs on a Ryzen 1700 @ 3,8 GHz with SMT on. | |
ID: 1077 · Reply Quote | |
But I wonder why the Ryzen isn't faster than the old i5, even with the optimized app and 600 MHz more clock speed. I saw this also on other Projects. It is more because with the i5-3570 you are using a full core, whereas with the Ryzen you are using a virtual core. So it is not bad at all, though you may be right that it is optimized for Intel. | |
ID: 1078 · Reply Quote | |
hi, | |
ID: 1082 · Reply Quote | |
It appears that initially sse2 was downloaded then it switched over to avx when it realized that those run better, I have an i7-4770. However, now it seems that it has switched back to sse2? There also seems to be no sign of it running FMA... | |
ID: 1083 · Reply Quote | |
It appears that initially sse2 was downloaded then it switched over to avx when it realized that those run better, I have an i7-4770. However, now it seems that it has switched back to sse2? There also seems to be no sign of it running FMA... The FMA version is still in 'beta' because of AMD Ryzen problems, if you want to try it you should enable 'receiving beta work' in your profile. | |
ID: 1084 · Reply Quote | |
Thanks. I followed the instructions in message #1033 so now I'm running gene@home PC-IM (Opti v1.2) 1.02 | |
ID: 1085 · Reply Quote | |
I saw many users are running v 1.03 | |
ID: 1149 · Reply Quote | |
I saw many users are running v 1.03 sorry, my bad. the v1.03 is only for linux | |
ID: 1156 · Reply Quote | |
I saw many users are running v 1.03 Official 1.0x apps are the same as Opti v.1.1 ones. Opti v.1.2 apps are not officially added yet. ____________ | |
ID: 1157 · Reply Quote | |
Hi Any news yet? valterc is waiting for the Mac version before he makes the new optimized app the default (have no idea why that's a condition). | |
ID: 1198 · Reply Quote | |
Hi, i'm trying my new r5-1600 stock (3.4ghz all core) and i've saw a big difference in CPU with other r5-1600 | |
ID: 1220 · Reply Quote | |
How is your RAM-Speed? | |
ID: 1221 · Reply Quote | |
How is your RAM-Speed? i have 1x8GB 2666mhz c16, maybe i try to overclock it i have undersood the "problem": if i set CPU usage at 50% (or turning off SMT) the 6 simultaneus WUs take around 2400s to complete:mysteri solved I don't understand why WUs don't speedup when cpu is at 3.8ghz | |
ID: 1222 · Reply Quote | |
How is your RAM-Speed? TN-Grid app is very memory-intensive. One person from my team wrote that on his Xeon 14c/28t (I do not know exact model, probably it is E5-2683 v3) 4 TN-Grid WUs consumed all available memory bandwidth. So when you hit this limit, increasing CPU speed will not help, it will faster wait for memory ;) Edit: when you set CPU usage to 50%, app will be able to get data from memory faster (less apps will compete for the same limited bandwidth), every app instance could use more cache (additionally helping with loading data), plus CPU resources will not be shared between two apps (SMT/HT does not improve speed twice, usually it is much less). If you want to improve speeds, use fastest possible memory, and overclock it if possible. ____________ | |
ID: 1223 · Reply Quote | |
Message boards :
Number crunching :
Optimization