Date: Sat, 21 Mar 2020 12:07:55 +0100 From: Alexander Leidinger <Alexander@leidinger.net> To: Stefan Ehmann <shoesoft@gmx.net> Cc: current@freebsd.org, freebsd-stable@freebsd.org Subject: Re: HOWTO donate CPU to the fight against the Corona-virus Message-ID: <20200321120755.Horde.zo0-HJ_AnsKmqqmFSb98-e8@webmail.leidinger.net> In-Reply-To: <2005523.RhTPgMbj8J@walrus.pepperland> References: <20200319085745.Horde.yAf5603LMT07oVm8NR1Abs6@webmail.leidinger.net> <2005523.RhTPgMbj8J@walrus.pepperland>
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This message is in MIME format and has been PGP signed. --=_ClfmenlmAABLeGcw7Zxopr7 Content-Type: text/plain; charset=utf-8; format=flowed; DelSp=Yes Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Quoting Stefan Ehmann <shoesoft@gmx.net> (from Sat, 21 Mar 2020=20=20 11:38:26=20+0100): > On Thursday, March 19, 2020 8:57:45 AM CET Alexander Leidinger via freebs= d- > stable wrote: >> Hi, >> >> if someone wants to donate some FreeBSD based CPU resources to the >> fight against the Corona-virus, here is a quick HOWTO in terms of >> installing the Folding@Home client on FreeBSD: >> >> https://www.leidinger.net/blog/2020/03/19/fighting-the-coronavirus-with-= free >> bsd-foldinghome/ >> > > Unfortunately, (using a CPU slot for the same work unit) TPF is 2-3 times > slower than on Ubuntu for me. Much of the speed difference seems to=20=20 >=20be related > to libOpenCL. If remove libOpenCL on Ubuntu, it's still 20-30% faster tha= n on > FreeBSD. The pure CPU based code should be the same. Someone would have to=20=20 trace=20/ reverse engineer what is going on. > Don't know how stable the TPF numbers are, so numbers may be bogus. > > Will a CPU slot also use the GPU with libOpenCL or is it just using bette= r > optimized code? I tried to install libOpenCL but all I get is: No idea. Just an assumption: either full CPU or full GPU. > OpenCL: Not detected: clGetPlatformIDs() returned -1001 Depending on what clGetPlatformIDs is doing and if it is not=20=20 using/requesting=20some GPU support, it may be worth to check the code=20= =20 of=20it so see if we can improve something. > Since there's no CUDA support for FreeBSD, I guess there is no point=20= =20 >=20in trying > getting GPU slots to work. I assume the same. First step would be to get CUDA support in FreeBSD.=20= =20 I=20think I remember somewhere on the X11 mailinglist someone told that=20= =20 he=20got some NVidia GPU compute part working... not really sure about=20= =20 that=20part. It would help to get a big player to request it from=20=20 NVidia.=20As Netflix seems to go the "encode videos on CPU" (assumption=20= =20 based=20upon their Intel av1 codec support/benchmarks) way, and other=20=20 players=20in the video / graphics business more oriented towards linux,=20= =20 I=20do not have much hope in this regard ATM. Bye, Alexander. --=20 http://www.Leidinger.net=20Alexander@Leidinger.net: PGP 0x8F31830F9F2772BF http://www.FreeBSD.org netchild@FreeBSD.org : PGP 0x8F31830F9F2772BF --=_ClfmenlmAABLeGcw7Zxopr7 Content-Type: application/pgp-signature Content-Description: Digitale PGP-Signatur Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJedfWLAAoJEBINsJsD+NiGJHEP/3zpzXxXQeZSdx10m9MQnJks 9AXLUbwH4LO6iAfnpSXRP8HxDp3HO8hRS4slzWxPokja8vxXSqWSlrX3Ze1RWaSU JGwta4hx8khuE7l5gUEZVFkso7y6Qp+WnSlyzJIwY1NDyxIIm4MlIzGPoR8z+iIc kUhuCeauagm/bqdIiYMeNUrNuxS/IPtA+Dwd02teS08IxN7l6xk8YQ0Sa59iGlmq PX7UsoICtqCih/kRon0y7a8HWqGgYfN+25DLeTJXffG+6y0OxyqgBSBrjLA3BIXS CiM32qBRs76HM3kgveqd6kfycsNN7Xgds2qeWaGPJbifts+ba1lPCD1qlILebQLh 4JcI2DmvdCLiucVxZWUF8LG1Ea54WCQCiCi6676mv+8ILOoZW17a3lJZH7t/vegH JIfx5PbzPRV+DOjnTQIJYu+pd4yxrrT6eKJm2Wm/dCfmIJXnIWA49Aae6zi3aNG5 bkW7WrBy2DANdGHl7jArOSDv8hcn1MPzsZ/6VMcMAb+HHKSP9K/iS23Y7k+RiixZ zJhG4crzdNKIIc0yIaXvptcMM59Tk4znG9LsRuBTCduLhtqPN7JYWxUth7A3INcB QqOetB56A9gvyn+PNNrq8zunpWxnOJjNnhrzDJuPk1NRzUSvEA/f48KQsrV3T8zn tXC9HuY7BwjBgaCeiG28 =G/qe -----END PGP SIGNATURE----- --=_ClfmenlmAABLeGcw7Zxopr7--
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