Any work units available for single CPU slot?

[tomosaigon]

Noticed on my servers that recently they stopped folding and this is in the logs:

Code: Select all

05:23:12:WU00:FS00:Connecting to assign4.stanford.edu:80
05:23:13:WU00:FS00:News: 
05:23:13:WARNING:WU00:FS00:Failed to get assignment from 'assign4.stanford.edu:80': Empty work server assignment
05:23:13:ERROR:WU00:FS00:Exception: Could not get an assignment

These are Ubuntu servers which worked fine before. The servers can connect manually to http on that server.

[Joe_H]

Not enough information to have an idea what the problem is beyond this - an "Empty work server" message means the Assignment Server could not match up your systems' request with a Work Server with projects suitable for the settings in effect.

If you post the first 100 or so lines of the log file which show the system and its configuration, we would have the information needed. You can also check back in the logs to see which Work Servers they had been give work from in the past, the Server Status page can be check to see if thy are up and if they have work to assign.

[tomosaigon]

Here's the top of the log starting from 2 days ago, and the log shows no successful assignments received in that time.

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1   *********************** Log Started 2015-07-11T05:20:30Z ***********************
  1 05:20:30:************************* Folding@home Client *************************
  2 05:20:30:    Website: http://folding.stanford.edu/
  3 05:20:30:  Copyright: (c) 2009-2013 Stanford University
  4 05:20:30:     Author: Joseph Coffland <joseph@cauldrondevelopment.com>
  5 05:20:30:       Args: --child --lifeline 30588 /etc/fahclient/config.xml --run-as
  6 05:20:30:             fahclient --pid-file=/var/run/fahclient.pid --daemon
  7 05:20:30:     Config: /etc/fahclient/config.xml
  8 05:20:30:******************************** Build ********************************
  9 05:20:30:    Version: 7.3.6
 10 05:20:30:       Date: Feb 18 2013
 11 05:20:30:       Time: 07:24:08
 12 05:20:30:    SVN Rev: 3923
 13 05:20:30:     Branch: fah/trunk/client
 14 05:20:30:   Compiler: GNU 4.4.7
 15 05:20:30:    Options: -std=gnu++98 -O3 -funroll-loops -mfpmath=sse -ffast-math
 16 05:20:30:             -fno-unsafe-math-optimizations -msse2
 17 05:20:30:   Platform: linux2 3.2.0-1-amd64
 18 05:20:30:       Bits: 64
 19 05:20:30:       Mode: Release
 20 05:20:30:******************************* System ********************************
 21 05:20:30:        CPU: Intel(R) Xeon(R) CPU E5-2630L v2 @ 2.40GHz
 22 05:20:30:     CPU ID: GenuineIntel Family 6 Model 62 Stepping 4
 23 05:20:30:       CPUs: 2
 24 05:20:30:     Memory: 1.95GiB
 25 05:20:30:Free Memory: 296.91MiB
 26 05:20:30:    Threads: POSIX_THREADS
 27 05:20:30:Has Battery: false
 28 05:20:30: On Battery: false
 29 05:20:30: UTC offset: 7
 30 05:20:30:        PID: 30595
 31 05:20:30:        CWD: /var/lib/fahclient
 32 05:20:30:         OS: Linux 3.13.0-52-generic x86_64
 33 05:20:30:    OS Arch: AMD64
 34 05:20:30:       GPUs: 0
 35 05:20:30:       CUDA: Not detected
 36 05:20:30:***********************************************************************
 37 05:20:30:<config>
 38 05:20:30:  <!-- Client Control -->
 39 05:20:30:  <fold-anon v='true'/>
 40 05:20:30:
 41 05:20:30:  <!-- User Information -->
 42 05:20:30:  <user v='tomosaigon'/>
 43 05:20:30:
 44 05:20:30:  <!-- Folding Slots -->
 45 05:20:30:</config>
 46 05:20:30:Switching to user fahclient
 47 05:20:30:Trying to access database...
 48 05:20:30:Successfully acquired database lock
 49 05:20:30:Enabled folding slot 00: READY cpu:1
 50 05:20:30:WU00:FS00:Connecting to assign3.stanford.edu:8080
 51 05:20:32:WU00:FS00:News:▫
 52 ^[[93m05:20:32:WARNING:WU00:FS00:Failed to get assignment from 'assign3.stanford.edu:8080': Empty work server assignment^[[0m
 53 05:20:32:WU00:FS00:Connecting to assign4.stanford.edu:80

[Joe_H]

Your dual-core system is set to request WU's for running on a single CPU core. Projects that can be assigned to run on a single CPU core have been in short supply for the last year or more. Changing the CPU setting to 2 will probably get you an assignment right away, most of the currently running projects have that as a minimum.

If that is not an option, the Google client for Chrome does get assigned smaller WU's and can be set to use a percentage of the available CPU power.

P.S. In the same folder as the current log file is a folder containing up to 16 previous logs. Examining them would show which Work Servers and projects your system was assigned in the past.

[7im]

Try moving the power slider to full. You should also upgrade to the latest 7.4.4 client. And add a passkey for bonus points.

[fangfufu]

I keep getting the following error for the past few days. I don't think there is any problem on my end, as my computer had been folding fine until a few days ago.

Code: Select all

******************************* Date: 2015-07-13 *******************************
01:41:59:FS00:Unpaused
01:41:59:WU01:FS00:Connecting to 171.67.108.200:8080
01:42:00:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.200:8080': Empty work server assignment
01:42:00:WU01:FS00:Connecting to 171.67.108.204:80
01:42:01:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.204:80': Empty work server assignment
01:42:01:ERROR:WU01:FS00:Exception: Could not get an assignment
01:42:15:Removing old file 'configs/config-20150626-012144.xml'
01:42:15:Saving configuration to /etc/fahclient/config.xml
01:42:15:<config>
01:42:15:  <!-- Folding Core -->
01:42:15:  <checkpoint v='30'/>
01:42:15:
01:42:15:  <!-- Network -->
01:42:15:  <proxy v='192.168.80.5:3128'/>
01:42:15:
01:42:15:  <!-- Slot Control -->
01:42:15:  <power v='full'/>
01:42:15:
01:42:15:  <!-- User Information -->
01:42:15:  <passkey v='********************************'/>
01:42:15:  <team v='50959'/>
01:42:15:  <user v='fangfufu'/>
01:42:15:
01:42:15:  <!-- Folding Slots -->
01:42:15:  <slot id='0' type='CPU'>
01:42:15:    <cpus v='1'/>
01:42:15:  </slot>
01:42:15:</config>
01:43:36:WU01:FS00:Connecting to 171.67.108.200:8080
01:43:37:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.200:8080': Empty work server assignment
01:43:37:WU01:FS00:Connecting to 171.67.108.204:80
01:43:38:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.204:80': Empty work server assignment
01:43:38:ERROR:WU01:FS00:Exception: Could not get an assignment
01:46:13:WU01:FS00:Connecting to 171.67.108.200:8080
01:46:15:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.200:8080': Empty work server assignment
01:46:15:WU01:FS00:Connecting to 171.67.108.204:80
01:46:16:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.204:80': Empty work server assignment
01:46:16:ERROR:WU01:FS00:Exception: Could not get an assignment
01:50:29:WU01:FS00:Connecting to 171.67.108.200:8080
01:50:30:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.200:8080': Empty work server assignment
01:50:30:WU01:FS00:Connecting to 171.67.108.204:80
01:50:32:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.204:80': Empty work server assignment
01:50:32:ERROR:WU01:FS00:Exception: Could not get an assignment
01:57:20:WU01:FS00:Connecting to 171.67.108.200:8080
01:57:21:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.200:8080': Empty work server assignment
01:57:21:WU01:FS00:Connecting to 171.67.108.204:80
01:57:23:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.204:80': Empty work server assignment
01:57:23:ERROR:WU01:FS00:Exception: Could not get an assignment
02:08:25:WU01:FS00:Connecting to 171.67.108.200:8080
02:08:26:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.200:8080': Empty work server assignment
02:08:26:WU01:FS00:Connecting to 171.67.108.204:80
02:08:26:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.204:80': Empty work server assignment
02:08:26:ERROR:WU01:FS00:Exception: Could not get an assignment
02:26:22:WU01:FS00:Connecting to 171.67.108.200:8080
02:26:23:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.200:8080': Empty work server assignment
02:26:23:WU01:FS00:Connecting to 171.67.108.204:80
02:26:24:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.204:80': Empty work server assignment
02:26:24:ERROR:WU01:FS00:Exception: Could not get an assignment
02:55:23:WU01:FS00:Connecting to 171.67.108.200:8080
02:55:24:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.200:8080': Empty work server assignment
02:55:24:WU01:FS00:Connecting to 171.67.108.204:80
02:55:25:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.204:80': Empty work server assignment
02:55:25:ERROR:WU01:FS00:Exception: Could not get an assignment
03:42:23:WU01:FS00:Connecting to 171.67.108.200:8080
03:42:24:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.200:8080': Empty work server assignment
03:42:24:WU01:FS00:Connecting to 171.67.108.204:80
03:42:25:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.204:80': Empty work server assignment
03:42:25:ERROR:WU01:FS00:Exception: Could not get an assignment
05:10:10:WU01:FS00:Connecting to 171.67.108.200:8080
05:10:11:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.200:8080': Empty work server assignment
05:10:11:WU01:FS00:Connecting to 171.67.108.204:80
05:10:11:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.204:80': Empty work server assignment
05:10:11:ERROR:WU01:FS00:Exception: Could not get an assignment
07:13:09:WU01:FS00:Connecting to 171.67.108.200:8080
07:13:10:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.200:8080': Empty work server assignment
07:13:10:WU01:FS00:Connecting to 171.67.108.204:80
07:13:11:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.204:80': Empty work server assignment
07:13:11:ERROR:WU01:FS00:Exception: Could not get an assignment
******************************* Date: 2015-07-13 *******************************
10:32:10:WU01:FS00:Connecting to 171.67.108.200:8080
10:32:11:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.200:8080': Empty work server assignment
10:32:11:WU01:FS00:Connecting to 171.67.108.204:80
10:32:12:WARNING:WU01:FS00:Failed to get assignment from '171.67.108.204:80': Empty work server assignment
10:32:12:ERROR:WU01:FS00:Exception: Could not get an assignment

[bollix47]

If you wish to continue folding at this time you need to increase the number of cpus or switch to nacl in chrome:

viewtopic.php?f=18&t=27854&p=277595#p277595

[Joe_H]

I keep getting the following error for the past few days. I don't think there is any problem on my end, as my computer had been folding fine until a few days ago.

This topic keeps coming up. The Assignment Servers 121.67.108.200 and .204 do not have any work, they just take your configuration information and connect your system to a Work Server with appropriate projects. You will need to look farther back in your logs and report which Work Server(s) or projects your client were connected with in the past.

Also, work for single-core systems has been in relatively short supply for the last year. It would take just one or two WS's going offline to create this situation. Knowing which servers you were connected to in the past will allow us to check and notify the appropriate person at PG.

[fangfufu]

Mod: Merged with other topic on failure to get assignments for a CPU setting of 1

I guess I will fold with 2 cores for now then.

If my system's performance deteriorate, should I stop running Folding@Home non-stop, or should I turn it back on single core? I heard that you can run Folding@Home when system is idle, I have never personally try that. What is it like? I am on Linux. I have always been running Folding@Home non-stop.

[bruce]

I have never experienced deteriorated performance from a single CPU client running on all of CPUs, to if you have 2 logical CPUs, I recommend running with both of them. Foreground tasks run at a higher priority than the FAH's processing software and it seems to give adequate performance to whatever I decide to do. I have experienced deteriorated performance when folding with a GPU and running a GPU only when the computer is idle "cures" that problem because I now never notice it.

Your perceptions of performance on your system are much more important than thinking that you should be experiencing delay because FAH is running. Try to be as unbiased as possible.

Try running continuously with all of your CPUs. If that's acceptable, fine. If not, reduce the number, but avoid a single CPU option. Switch to the Chrome client if you're convinced that larger numbers are not working to your satisfaction.

I'm assuming that you cannot fold with a supported GPU. If that's not true, or for additonal help, see the link below.

[davidcoton]

It depends what else you do on your computer, and how often. Usually running all CPU cores all the time is fine, and obviously maximises the work done. Both Windows and Linux will run the work at low priority, and will automatically move it out of the way when you do anything else on the computer. You only need to use other settings if this gives you an unsatisfactory result for your other tasks. In this case you can try single core (if WUs are available), Fold on Idle, or the NaCl client.

GPUs can be more of a problem, since GPUs have no scheduling priorities (yet).

[bruce]

We now have two reports of this problem, and in both cases, the client was set to cpus=1. That suggests that the last server which has projects for a single CPU might have been distributing them last week and that project might have finished or that sever might have crashed. Since finding which projects might be distributed to single CPU systems, figuring out WHY you stopped getting assignments involves quite a bit of detective work.

(Even a statement from a third person saying "I changed cpus=2 to cpus=1 and now can no longer get assignments" would help us, even though that's probably not true for you.)

[tomosaigon]

Thanks for archived log files location. Here's a log snippet from a week ago when I was still receiving work units:

Code: Select all

*********************** Log Started 2015-07-06T03:22:02Z ***********************
03:22:02:************************* Folding@home Client *************************
03:22:02:    Website: http://folding.stanford.edu/
03:22:02:  Copyright: (c) 2009-2013 Stanford University
03:22:02:     Author: Joseph Coffland <joseph@cauldrondevelopment.com>
03:22:02:       Args: --child --lifeline 11721 /etc/fahclient/config.xml --run-as
03:22:02:             fahclient --pid-file=/var/run/fahclient.pid --daemon
03:22:02:     Config: /etc/fahclient/config.xml
03:22:02:******************************** Build ********************************
03:22:02:    Version: 7.3.6
03:22:02:       Date: Feb 18 2013
03:22:02:       Time: 07:24:08
03:22:02:    SVN Rev: 3923
03:22:02:     Branch: fah/trunk/client
03:22:02:   Compiler: GNU 4.4.7
03:22:02:    Options: -std=gnu++98 -O3 -funroll-loops -mfpmath=sse -ffast-math
03:22:02:             -fno-unsafe-math-optimizations -msse2
03:22:02:   Platform: linux2 3.2.0-1-amd64
03:22:02:       Bits: 64
03:22:02:       Mode: Release
03:22:02:******************************* System ********************************
03:22:02:        CPU: Intel(R) Xeon(R) CPU E5-2630L v2 @ 2.40GHz
03:22:02:     CPU ID: GenuineIntel Family 6 Model 62 Stepping 4
03:22:02:       CPUs: 2
03:22:02:     Memory: 1.95GiB
03:22:02:Free Memory: 225.36MiB
03:22:02:    Threads: POSIX_THREADS
03:22:02:Has Battery: false
03:22:02: On Battery: false
03:22:02: UTC offset: 7
03:22:02:        PID: 11728
03:22:02:        CWD: /var/lib/fahclient
03:22:02:         OS: Linux 3.13.0-52-generic x86_64
03:22:02:    OS Arch: AMD64
03:22:02:       GPUs: 0
03:22:02:       CUDA: Not detected
03:22:02:***********************************************************************
03:22:02:<config>
03:22:02:  <!-- Client Control -->
03:22:02:  <fold-anon v='true'/>
03:22:02:
03:22:02:  <!-- User Information -->
03:22:02:  <user v='tomosaigon'/>
03:22:02:
03:22:02:  <!-- Folding Slots -->
03:22:02:</config>
03:22:02:Switching to user fahclient
03:22:02:Trying to access database...
03:22:02:Successfully acquired database lock
03:22:02:Enabled folding slot 00: READY cpu:1
03:22:02:WU00:FS00:Connecting to assign3.stanford.edu:8080
03:22:03:WU00:FS00:Connecting to assign3.stanford.edu:8080
03:22:04:WU00:FS00:News: 
03:22:04:WU00:FS00:Assigned to work server 171.64.65.124
03:22:04:WU00:FS00:Requesting new work unit for slot 00: READY cpu:1 from 171.64.65.124
03:22:04:WU00:FS00:Connecting to 171.64.65.124:8080
03:22:04:WU00:FS00:Connecting to 171.64.65.124:8080
03:22:05:WU00:FS00:Downloading 902.09KiB
03:22:08:WU00:FS00:Download complete
03:22:08:WU00:FS00:Received Unit: id:00 state:DOWNLOAD error:NO_ERROR project:9015 run:54 clone:0 gen:85 core:0xa4 unit:0x00000063ab40417c554e9b63e370ef46
03:22:08:WU00:FS00:Downloading core from http://web.stanford.edu/~pande/Linux/AMD64/Core_a4.fah
03:22:08:WU00:FS00:Connecting to web.stanford.edu:80
03:22:08:WU00:FS00:FahCore a4: Downloading 2.56MiB
03:22:14:WU00:FS00:FahCore a4: 61.06%
03:22:18:WU00:FS00:FahCore a4: Download complete
03:22:18:WU00:FS00:Valid core signature
03:22:18:WU00:FS00:Unpacked 5.98MiB to cores/web.stanford.edu/~pande/Linux/AMD64/Core_a4.fah/FahCore_a4
03:22:18:WU00:FS00:Starting
03:22:18:WU00:FS00:Running FahCore: /usr/bin/FAHCoreWrapper /var/lib/fahclient/cores/web.stanford.edu/~pande/Linux/AMD64/Core_a4.fah/FahCore_a4 -dir 00 -suffix 01 -version 703 -lifeline 11728 -checkpoint 15
03:22:18:WU00:FS00:Started FahCore on PID 11750
03:22:18:WU00:FS00:Core PID:11754
03:22:18:WU00:FS00:FahCore 0xa4 started
03:22:19:WU00:FS00:0xa4:
03:22:19:WU00:FS00:0xa4:*------------------------------*
03:22:19:WU00:FS00:0xa4:Folding@Home Gromacs GB Core
03:22:19:WU00:FS00:0xa4:Version 2.27 (Dec. 15, 2010)
03:22:19:WU00:FS00:0xa4:
03:22:19:WU00:FS00:0xa4:Preparing to commence simulation
03:22:19:WU00:FS00:0xa4:- Looking at optimizations...
03:22:19:WU00:FS00:0xa4:- Created dyn
03:22:19:WU00:FS00:0xa4:- Files status OK
03:22:19:WU00:FS00:0xa4:- Expanded 923228 -> 1526808 (decompressed 165.3 percent)
03:22:19:WU00:FS00:0xa4:Called DecompressByteArray: compressed_data_size=923228 data_size=1526808, decompressed_data_size=1526808 diff=0
03:22:19:WU00:FS00:0xa4:- Digital signature verified
03:22:19:WU00:FS00:0xa4:
03:22:19:WU00:FS00:0xa4:Project: 9015 (Run 54, Clone 0, Gen 85)
03:22:19:WU00:FS00:0xa4:
03:22:19:WU00:FS00:0xa4:Assembly optimizations on if available.
03:22:19:WU00:FS00:0xa4:Entering M.D.
03:22:26:WU00:FS00:0xa4:Completed 0 out of 250000 steps  (0%)

P.S. Changing the number of CPUs isn't an option for this machine (which is also a headless server so I don't have the FAH gui client).

[Joe_H]

That is useful information. The WS that provided you Project 9015, 171.64.65.124, is in Reject mode since the end of last week from looking at the Server Status page and the connected log. I will contact the appropriate persons at PG to see if it can/will be brought back online.

[sryckbos]

Thank you for the information. I appreciate it and am working to get everything working again as soon as possible.