From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Jan Kiszka <jan.kiszka@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] RT OS Selection advice for parallel processing
Date: Thu, 03 Feb 2011 12:04:56 +0100 [thread overview]
Message-ID: <4D4A8BD8.1060900@domain.hid> (raw)
In-Reply-To: <4D4A84ED.7030604@domain.hid>
Jan Kiszka wrote:
> [ And, personally, I don't trust the NVIDIA driver a lot. But that might
> be influenced by the fact that latest versions lock up my notebook
> regularly after resume and that I filed another obvious locking issue of
> the compilable driver stub around mmap_sem without any response from the
> vendor. ]
Some colleague of mine is using the NVIDIA driver (through the opengl
mapping, not CUDA/VDPAU, whatever) on high-end NVIDIA boards in a non RT
situation. he definitely observed some huge latencies not due to
scheduling issues, when uploading textures to the GPU. We are talking
tens of milliseconds here.
--
Gilles.
next prev parent reply other threads:[~2011-02-03 11:04 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-03 8:57 [Xenomai-help] RT OS Selection advice for parallel processing Rudolf Meijering
2011-02-03 10:35 ` Jan Kiszka
2011-02-03 11:04 ` Gilles Chanteperdrix [this message]
2011-02-03 11:24 ` Jan Kiszka
2011-02-03 11:27 ` Gilles Chanteperdrix
2011-02-03 11:46 ` Jan Kiszka
2011-02-03 11:49 ` Gilles Chanteperdrix
2011-02-03 12:50 ` Jan Kiszka
2011-02-03 13:21 ` Gilles Chanteperdrix
2011-02-04 13:33 ` Rudolf Meijering
2011-02-04 22:15 ` Gilles Chanteperdrix
2011-02-12 18:13 ` Richard Cochran
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