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From: | Mostafa Alizadeh |
Subject: | Re: [Discuss-gnuradio] how to pass a large number of items between blocks? |
Date: | Thu, 15 May 2014 10:47:22 +0430 |
Hi Martin,Yes you're right, 75000 items isn't so large! But after passing these items through an encoder, the number of items becomes about 227000!! That's a big number!However, I skewed over the problem and till now I've reached to this point that I may use 3 or 4 inputs-ouputs ports per block (instead of actually one input-ouput port) and divide the 227000 items into 4 parallel streams and read all of them through 3/4 different input ports and put them out to the 3/4 output ports ! That seems work but I'm not sure that's the best one.If you have any idea I'll be appreciate you so much.best,On Wed, May 14, 2014 at 1:04 PM, Martin Braun <address@hidden> wrote:
You could use your own version of tagged streams to indicate boundaries... regular tagged stream blocks also suffer from buffer limitations.On 13.05.2014 19:27, Mostafa Alizadeh wrote:
Hi,
I recently encountered a problem with the large number of items. I wanna
pass about 75000 items from one block to the another. I thought that I
could do this with setting the min of output items in the constructor of
the block but I got the following error by runtime:
thread[thread-per-block[1]: <block crc (1)>]: Buffer too small for
min_noutput_items
I searched around but I couldn't find a cogent response. please help me!
That said, 75000 items doesn't seem all that large. What's your item size, is it sizeof(gr_complex)? Did you set your kernel.shmmax = 2147483648?
M
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