[petsc-dev] [SLEPc - GPU] Problems running SLEPc on GPUs

[Leoni, Massimiliano]

> -----Original Message-----
> From: Jose E. Roman [mailto:jroman at dsic.upv.es]
> Sent: 24 July 2015 09:20
> To: Leoni, Massimiliano
> Cc: petsc-dev at mcs.anl.gov; Alejandro Lamas
> Subject: Re: [petsc-dev] [SLEPc - GPU] Problems running SLEPc on GPUs
> 
> As you can seen in section 8.3 of SLEPc’s users manual, the command-line
> example adds -bv_type vecs, otherwise you get this error. In the short term
> we plan to add GPU support for the default BV, but for the moment you
> have to use this BV type.
> 
> We would be interested in knowing how this works for you, send feedback
> to slepc-maint.
> 
> Thanks.
> Jose

Great, apologies for not going through the SLEPc manual first, I thought I was fine with PETSc's.
Anyway, I just run the same test and I got a neat, out-of-the-box 3x speedup compared to the single processor version [NVIDIA Tesla C2070 vs Intel Xeon X5650].

I will go through more extensive testing if we decide to continue using PETSc-SLEPc.

Best,
Massimiliano 
The data contained in, or attached to, this e-mail, may contain confidential information. If you have received it in error you should notify the sender immediately by reply e-mail, delete the message from your system and contact +44 (0) 1332 622800(Security Operations Centre) if you need assistance. Please do not copy it for any purpose, or disclose its contents to any other person.

An e-mail response to this address may be subject to interception or monitoring for operational reasons or for lawful business practices.

(c) 2015 Rolls-Royce plc

Registered office: 62 Buckingham Gate, London SW1E 6AT Company number: 1003142. Registered in England.