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  • Pi Supercomputer

    Mar 30, 2021 raspberry performance python
    Pi Supercomputer

    Following on from base Ubuntu build here I begin to look at Parrallel Programming. Parrallel Programming Each Raspberry Pi is a small unit of compute, one of my goals is to understand how operating many in a cluster. There are various approaches to parallel computational models, message-passing has proven to be an …

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  • Comparing SD and USB 3 Storage Performance With Raspberry Pi4B

    Mar 29, 2021 raspberry performance
    Comparing SD and USB 3 Storage Performance With Raspberry Pi4B

    Following on from base Ubuntu build here I look at the comparing the storage performance of SD and USB. SD Card Performance Linux FIO tool will be used to measure sequential write performance of a 4GB file: fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=test --bs=4k --iodepth=64 …

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  • Raspberry Pi Cluster Ubuntu Base

    Mar 28, 2021 raspberry
    Raspberry Pi Cluster Ubuntu Base

    Following on from Raspberry Pi Cluster here I look at the base Ubuntu build. Install and Configure I used Raspberry Pi imager to install the Ubuntu 20.10 64bit on each SD Card. Insert these into the Pi’s and power them on. The image is configured with DHCP client, Pi device MAC addresses are prefixed DC:A6:32. I …

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  • Raspberry Pi Cluster Hardware

    Mar 27, 2021 raspberry
    Raspberry Pi Cluster Hardware

    I have worked most of my professional life with systems built with Intel x86, x64 and ia64 chips. Intel processors use Complex Instruction Set Computing while Arm uses Reduced Instruction Set Computing. Processors with CISC architecture look to move complexity to hardware to simlify code, so small code sizes with high …

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Darryl Cauldwell

Technologist, perpetual student, teacher, continual incremental improvement.
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