30 August 2014

30th of August

Farm news
The farm is continuing its Seti crunching. I am aiming for 25 million credits and its currently above 22 million. The farm is doing around 88,000 per day at the moment. The weather has been cool and wet so I have added another one of the Nvidia GPU machines to the task. That takes the current effort to be 3  Nvidia GPU machines and 5 Intel iGPU machines.

SD card woes
As you would have gathered from the last couple of blog posts I have been having some issues with the SD cards on the Raspberry Pi's. This week I purchased 5 new ones and will start replacing them all. I have already thrown 2 cards in the bin.

SD cards are not designed for computers running 24 hours a day, 7 days a week writing data constantly. They simply wear out the memory cells. There is a Linux file system called F2FS (Flash Friendly File System) that would be better suited than the ext4 file system that I am currently using, however its not mature enough yet.

Raspberry Pi B+
While researching Linux file systems I noted that the Raspberry Pi B+ version has replaced the B version that I have. I have ordered one. Its still based upon the same SoC (System on a Chip) but has more USB ports, a lower power consumption, uses a MicroSD card instead of the standard SD card and has a redesigned layout. The connectors are on two edges now.

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