Posts by UBT

1) Message boards : Number crunching : Raspberry Pi 5 (Message 108857) Posted 19 Feb 2024 by UBT - wbiz Post: I plan on buying more RPi5s over time, so it’ll be interesting to see if the chips get better and more stable at higher clocks. Will also be interesting to see how long they last crunching 24/7! They have thermal protection so I can't see the chips getting damaged even at silly-overclocks. The weakest link in my mind is the capacitors, the warmer they are, the shorter their life. With the early Pi4's the PMIC gets very hot and might transfer their heat to nearby capacitors, the later Pi4's with the newer PMICs are much better. I'm in two minds about the value of Pi's on boinc now, there are 16 thread mini-pc's around at considerably higher performance and the same order of energy efficiently. Plus many projects don't support Pi's On boinc I'm currently running three Pi4's, one Pi5, three i7-4790S and two ryzen7 5800H. The 4790S's have to go because of energy efficiency although they are brilliant reliable workhorses.
2) Message boards : Number crunching : Problems and Technical Issues with Rosetta@home (Message 108535) Posted 27 Aug 2023 by UBT - wbiz Post: Several Rosetta Beta v6.03 windows_x86_64 tasks lately. Most gave error while computing, one gave Valid, two are still In progress. https://boinc.bakerlab.org/rosetta/workunit.php?wuid=1365343858was valid, one starting structure, 653 decoys. The two still in progress gave error while computing for the previous runs by other users, one using Linux and one using Windows. I'm getting 20% success rate on Beta at the moment, errors always match the other validator whatever OS and CPU they are using. Its all for the common good, I presume the beta team are monitoring the errors.
3) Message boards : Number crunching : Problen downloading work tasks. (Message 107831) Posted 17 Dec 2022 by UBT - wbiz Post: Cleaner has pulled the download server's plug out to use the vacuum cleaner.
4) Message boards : Number crunching : Problems and Technical Issues with Rosetta@home (Message 107244) Posted 11 Oct 2022 by UBT - wbiz Post: It is impossible to call English pure, it is and always has been a cacophony of other languages. It isn't even the native language of England.
5) Message boards : Number crunching : Problems and Technical Issues with Rosetta@home (Message 107141) Posted 8 Oct 2022 by UBT - wbiz Post: I know perfectly well how all disks work and have been in the business since 1997. Please learn basic English. Here is a helper for you: Hard disk/rust spinner = mechanical drive connected via SATA, previously IDE. Now gets up to about 170MB/s. SSD = solid state drive connected via SATA, limited by SATA to about 550MB/s. NVME = solid state drive connected directly to the motherboard using PCI express, gets up to 7000MB/s. I prefer 7000 to 550. As I understand it .... The underlying speed difference of the SSD chips is probably not that much different, NVME speed relies heavily on dram cache inside the SSD package, if a similar cache system was built into the CPU motherboard and a SATA drive used, would the performance of the system be similar to NVME? Basically NVME vs SATA is measuring speed at a different point in the chain. Going one step further, do any motherboards have a dedicated disk-cache system built in? If not, why not? It would appear to be a terrible waste having every SSD containing components that could be located on the motherboard where more flexible choices could be included.
6) Message boards : Number crunching : Problems and Technical Issues with Rosetta@home (Message 102380) Posted 10 Aug 2021 by UBT - wbiz Post: Their job is to do research, not to create meaningless work, so sometimes there is down-time. It is especially understandable at the moment with such big improvements being made in the field since AlphaFold 2's showing at CASP13 and more recently, since releasing their source code. It would be good to have more information posted about what is happening behind the scenes and the different versions of Rosetta though, especially the vbox versions. I thought RoseTTAFold was one step ahead of AlphaFold 2 now?

Posts by UBT - wbiz