Fwd: why when i use gnuradio for USRP with UHD for high sample rate record file is not work

[Ed Criscuolo]

Sorry, meant to send this to the list. 

@(^.^)@ Ed

Sent from my iPhone

Begin forwarded message:

From: Ed Criscuolo <ed@chessie.com>
Date: September 21, 2021 at 11:23:24 AM EDT
To: Marcus D Leech <patchvonbraun@gmail.com>
Subject: Re: why when i use gnuradio for USRP with UHD for high sample rate record file is not work

Since the X300 creates 16-bit samples, converting the complex float
samples into complex integer samples would reduce this to 4 bytes
per sample.  A 60 msps stream would then require only 240Mbyte/sec
disk write speed.   And if you can stand the loss in sampling
resolution,  going down to 8-bit samples by using complex short samples
would further reduce this to 120MBytes/sec.

@(^.^)@  Ed



On 9/21/21 10:45 AM, Marcus D Leech wrote:

Well if you’re recording complex float samples, that’s 8 bytes each. At

60msps that’s 480Mbyte/second. Not too many disk subsystems can keep up

at that rate.

You might try short recordings into a RAM disk filesystem.

Sent from my iPhone

On Sep 21, 2021, at 10:42 AM, یک نفر <stackprogramer@gmail.com> wrote:



I use a USRP x300, when i want to use uhd and file sink in gnuradio ,

for high sample rate like 60M or 80M gnuradio can not record

file.Gnuradio print some character on log: i want to record a sample

not any other thing.

Is there any way that i can record with high sample rate in gnuradio?

my system is powerful:

Core i7

RAM 16

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