Re: GRC programming problem--anyone with any bright ideas? (fwd)

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1

---------- Forwarded message ----------
Date: Fri, 20 Apr 2012 09:44:34 -0700
From: Nickolas F. [email protected]
To: Vladimir Dergachev [email protected]
Subject: Re: [Discuss-gnuradio] GRC programming problem–anyone with any
bright
ideas? (fwd)

Vladimir,

I might suggest to Marcus that he try a ramdisk cache such that
many-Hz open() calls are quite cheap. Not a perfect solution, but
might be the quickest to implement. Alternatively, he might defer
file-writing until arbitrarily later, storing a queue of lines to be
written to each file.

Take care,
Nick

On Fri, Apr 20, 2012 at 09:37, Vladimir Dergachev [email protected]
wrote:

I’ve been working on a flow-graph for meteor-burst detection on VHF (more
to record downsampled baseband data during triggering. The problem, of
Any hints on how to do that?

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–

Nickolas F.
Postdoctoral Scholar
LIGO Laboratory, Caltech
Phone: 626-395-8740
Fax: 626-304-9834

2

On 04/20/2012 03:45 PM, Vladimir Dergachev wrote:

Vladimir,

I might suggest to Marcus that he try a ramdisk cache such that
many-Hz open() calls are quite cheap. Not a perfect solution, but
might be the quickest to implement. Alternatively, he might defer
file-writing until arbitrarily later, storing a queue of lines to be
written to each file.

Take care,
Nick

I actually worked out a different solution, involving reflexive FIFOs
seems to work.

bright
trigger-detection/recording function also returns a filename (either
proceed

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–
Marcus L.
Principal Investigator
Shirleys Bay Radio Astronomy Consortium