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drummers-lowrise
1) Message boards : Number crunching : Android (Message 87763)
Posted 1380 days ago by ebahapoProject donor
The original developer can no longer work on the application.

How can I help?
2) Message boards : Proth Prime Search : PPS LLR (Message 78490)
Posted 1783 days ago by ebahapoProject donor
Is there a difference in speed between the 32bit and 64bit PPS LRR application?

Yes, the 64-bit version seems to have an edge over the 32-bit one: http://bit.ly/1pKTMxN

HTH
3) Message boards : Number crunching : Oops! Lesson learned about UPS and active PFC power supplies (Message 74157)
Posted 1930 days ago by ebahapoProject donor
Power factor correction has nothing to do with the environment as much as with the utilities meter.

Whether the power is resistive of reactive, it still has to be produced at the power plant. If customers were billed just for the resistive power, then the utilities company would run a loss.

The domestic meter can only measure resistive power, which is not much of a problem with few and predictive reactive loads, like home appliances. However, commercial and industrial meters, where reactive loads are significant and varied, also have a power factor meter, which is then used in conjunction with the regular meter to figure out the total power used.

Now, home appliances usually have a passive power factor correction capacitors attached to the motors. Home computers have varying load and they may consume resistive or reactive power depending on what is run on it. Yet, a home computer uses just too little reactive power to make a dent for the monthly utilities bill.

Businesses have plenty of computers, many the same as those found at homes. Data-centers have commercial computers galore. In both cases, their use of reactive power will be significant. Short of requiring all such utilities customers to have a power factor meter, the computers themselves could present purely resistive loads. Since the load varies a lot, between resistive and reactive, inductive and capacitive, it requires a more sophisticated solution to correct its power factor than slapping a capacitor to its power supply as to a motor.

That's when active or passive PFC comes in. Unfortunately, the early active designs present this problem with non-sinusoidal voltage due to poor engineering.
4) Message boards : Number crunching : Intel GPU (Message 70936)
Posted 2041 days ago by ebahapoProject donor
Thanks, but isn't it merely a matter of renaming the program file of an existing OpenCL app for a platform and adding the information to the BOINC server?
5) Message boards : Number crunching : Intel GPU (Message 70931)
Posted 2041 days ago by ebahapoProject donor
Yes? No?
6) Message boards : Number crunching : Intel GPU (Message 70806)
Posted 2046 days ago by ebahapoProject donor
Now that BOINC supports CPU and GPU Intel OpenCL, will the OpenCL application be supported for such hosts?

TIA
7) Message boards : Number crunching : ARM Devices (Message 63604)
Posted 2284 days ago by ebahapoProject donor
If and when ARM is supported, the offer above to help out stands.

I appreciate your response.

Cheers.
8) Message boards : Number crunching : ARM Devices (Message 63602)
Posted 2284 days ago by ebahapoProject donor
Perhaps PPS-LLR and SG-LLR would good candidates to try at first.

Which application? There's many applications that PrimeGrid supports.
...
ALL of the primality tests -- LLR and Genefer, MUST use floating point (and, realistically, double precision floating point), so the only applications we have available via BOINC that could conceivably run on a device without floating point support would be the PPS-Sieve and TRP-Sieve applications.
I guess that PPS-LLR and SG-LLR would then be good candidates for arm-unknown-linux-gnueabihf, while PPS-Sieve and TRP-Sieve, as you suggested, would be good candidates for arm-unknown-linux-gnueabi.
I'm not very familiar with linux on ARM processors, or this gnueabi. Is this for devices like Raspberry-Pi, or is this for mobile devices like phones and tablets?
Devices akin to the RaspberryPi and some NAS boxes.
We currently have no plans for any ARM-based applications, but most if not all of our applications are open-source, so you can always try building them yourself and running with app_info.
I mean to suggest supporting ARM. I'm not a fan of maintaining my own anonymous build.
9) Message boards : Number crunching : ARM Devices (Message 63601)
Posted 2284 days ago by ebahapoProject donor
No, I don't mean an anonymous platform, but a new officially supported platform by the project.
10) Message boards : Number crunching : ARM Devices (Message 63600)
Posted 2284 days ago by ebahapoProject donor
I mean ARM Linux, not ARM Android. I'm sure that NativeBOINC serves Android pretty well, but there's RaspberryPi, ReadyNAS, etc which are plain Linux ARM devices.


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