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Title: Is Hyperthreading better, neutral, or worse for scrypt calculations? Post by: ripper234 on October 12, 2011, 12:36:24 AM To get optimal performance, should one turn hyperthreading on or off?
One advantage of HT is that if I want to not run all my cores, because I'm using the computer, and I don't trust that putting the process on "Low Priority" is good enough, then with HT I can mine with 7/8 "cores", while without it I have to choose between 3/4 and 4/4. Raw performance wise, how does HT affect mining speed? LiteCoin is right around the corner. Title: Re: Is Hyperthreading better, neutral, or worse for scrypt calculations? Post by: bulanula on October 12, 2011, 12:40:56 AM Interested in this as well.
Title: Re: Is Hyperthreading better, neutral, or worse for scrypt calculations? Post by: Bobnova on October 12, 2011, 01:29:51 AM In linux64 on a 2600k with default compiling options, HT doesn't help or hurts performance.
In linux64 on a 2600k with AVX enabled in compilation of the client, HT helps significantly. Title: Re: Is Hyperthreading better, neutral, or worse for scrypt calculations? Post by: grod on October 12, 2011, 01:31:34 AM i7 920 on linux64, -march=native -O3 -msse4.2: HT yields 1% more hash at a cost of about 3 degrees more per core.
Title: Re: Is Hyperthreading better, neutral, or worse for scrypt calculations? Post by: bulanula on October 12, 2011, 01:48:41 AM In linux64 on a 2600k with default compiling options, HT doesn't help or hurts performance. In linux64 on a 2600k with AVX enabled in compilation of the client, HT helps significantly. Can you please tell us your compile options and your khash/s. Thanks ! Title: Re: Is Hyperthreading better, neutral, or worse for scrypt calculations? Post by: panerai on October 12, 2011, 01:55:29 AM I'm a Windows guy. Not sure if you guys can help me with HT also. I wish there was a list of minerd switches I can play with
Title: Re: Is Hyperthreading better, neutral, or worse for scrypt calculations? Post by: Bobnova on October 12, 2011, 01:56:24 AM They're already in the TBX and "what speed are you mining TBX?" threads Bula.
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