Posts by Matt Kowal

1) Message boards : Number crunching : Credit etc... (Message 1961)
Posted 25 days ago by Matt Kowal
Is there a list of users with the highest credit score?

Is there any rewards from reaching certain credit-scores?

Personal satisfaction and respect from your volunteer computing peers. And badges!

How many is participating in this project?

As of this post there are 7,763 users with credit :
2) Message boards : News : New subfield search (Message 1915)
Posted 23 Dec 2017 by Matt Kowal
The batch status page ( is no longer reporting progress. The status of subfield ℚ(√-2) is no longer listed.
3) Message boards : Number crunching : BOINC client and BAM manager force use of old url to connect (Message 1786)
Posted 19 Nov 2016 by Matt Kowal
A couple months ago, I updated this project to use https. Now I am receiving the following notice, "This project is using an old URL. When convenient, remove the project, then add"

Is it safe to ignore?
4) Message boards : News : Bounded App Final Tally of Results (Message 1729)
Posted 22 May 2016 by Matt Kowal
The link to the pdf does not work for me.

"Firefox can't establish a connection to the server at"
5) Message boards : News : The final subfield is almost complete (Message 1721)
Posted 6 May 2016 by Matt Kowal
Huzzah! Nice work everyone. Do not hurry, do not rest.

Have a pleasant weekend, Eric.
6) Message boards : Number crunching : Bug in PARI/GP (Segmentation Fault) - compute error (Message 1593)
Posted 12 Mar 2016 by Matt Kowal
Same :

Does "Too many errors (may have bug)" mean this workunit has already been flagged?
7) Message boards : Number crunching : Use the (free) $300 credit from GoogleCloudCompute for your NumberFields@home and other BOINC endeavors (Message 1591)
Posted 10 Mar 2016 by Matt Kowal
Google offers a $300, 60 day trial period for their cloud computing platform. The platform allows you to create Linux virtual machines that run on Google's cloud infrastructure.

Offer requires a Google account and an active credit card. When the free trial credit/period ends the instances are paused and you are prompted to upgrade to continue services. Accounts are only charged if the user opts to upgrade to paid service. I successfully ran (5) 2xhighcpu instances for about a month until my credit expired. To avoid any potential downtime, I'd recommend attaching two projects to each instance.

The vanilla link :

Happy Computing

1 - go to Sign in with your Google account and complete the registrations necessary to 'Start your free trial'

2 - create a new compute engine project

3 - create a a new VM instance

4 - create a 'high CPU' instance using the Debian or Ubuntu image

5 - once Google has created the instance, click on it in the project management console. Select 'Open in browser window' from the SSH drop down to start interacting with the VM instance.

6 - you will see a command prompt where you can begin entering the commands in step 8

7 - for each of the BOINC projects that you want to run in the VM, log in to your account for the project and click on 'Account Keys'. (It is assumed that you already have BOINC accounts created. Creating BOINC project accounts is beyond the scope of this tutorial)

8 - make note of the URL and account key shown on the account keys page

9 - in the SSH terminal enter the following commands:

$ sudo apt-get update
$ sudo apt-get install boinc

for each project that you want to run, enter:
$ boinccmd --project_attach PROJECT_URL AUTH_KEY
replacing PROJECT_URL and AUTH_KEY with the values that you gathered in step 8

$ boinccmd --set_run_mode always
$ boinccmd --set_network_mode always

The following commands are useful for monitoring the state of BOINC:
$ boinccmd --get_simple_gui_info
$ boinccmd --get_tasks
$ boinccmd --get_file_transfers

10 - once BOINC has connected with the servers and downloaded tasks, you should see both CPU cores running near 100%

$ top

11 - your instance has been successfully created and configured. You will see the CPU graph in the project console running at 100%.

12 - looking at the pricing, the instance will cost approximately $0.06 per hour. In order to use up the $300 trial credit within the 60 day trial period, we can run 4 instances. ($0.06/hr * 24 hr * 60 days = $86 per instance for 60 days)

13 - copy your instance and repeat steps 4 through 11 for each instance that you create.

14 - please note that the above pricing model may be outdated. I was able to create 5 instances that collectively exhausted the free credit in about 4 weeks. I was not charged anything.
8) Message boards : Number crunching : a Linux on ARM application? (Message 1493)
Posted 17 Jan 2016 by Matt Kowal
I would be willing to test said application on a Raspberry Pi 2
9) Message boards : Number crunching : a Linux on ARM application? (Message 1492)
Posted 17 Jan 2016 by Matt Kowal

Can you build an app for Linux running on ARM?

Thank you.
10) Message boards : News : Double credits for problematic work units. (Message 1482)
Posted 13 Jan 2016 by Matt Kowal
This WU took 17 days to process on my AMD A8-3850 :)
11) Message boards : News : Extra long WUs (Message 1386)
Posted 13 Dec 2015 by Matt Kowal
I have no issue with long WUs. I let them finish.
The project appears to be movingly along swimmingly.

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