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Communication with VM Hypervisor failed
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Koppany Send message Joined: 2 Nov 07 Posts: 5 Credit: 754,830 RAC: 0 |
I had suspended all new work units from C@h for several months, but requested new units this morning to resume participation. The BOINC Manager appeared to download 22 C@h tasks (camb_boinc2docker 2.05), but each task appeared with the subject error message. I am on 64-bit Windows 10 running VirtualBox 6.1.12 which I downloaded and installed bundled with my current BOINC Manager release 7.16.11. Does anyone have suggestions for troubleshooting or simply solving this problem? Many thanks in advance. Terry P.S. I have the vbox.log file, but I don't see a file attachment function here in the forum. Should I simply paste it into the message box? |
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Jonathan Send message Joined: 27 Sep 17 Posts: 190 Credit: 8,321,383 RAC: 557 |
Please post more details on your preferences, other projects and how many cpu cores are assigned to your camb_boinc2docker task when it is trying to start. Is the message "Postponed: Communication with VM Hypervisor failed" or are your tasks not starting the VM at all? |
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Koppany Send message Joined: 2 Nov 07 Posts: 5 Credit: 754,830 RAC: 0 |
Thanks for your questions. Yes, the full message is: "Postponed: Communication ... failed." I'm running a few other non-GPU projects on this Intel i5 4-core CPU, namely: Einstein@home Rosetta@home LHC@home Milkyway@home World Community Grid Cheers, Terry |
 Terrified74 Send message Joined: 8 Mar 20 Posts: 2 Credit: 73,867 RAC: 0 |
use a older version of virtual box {5x}. It solved my problem. |
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Jonathan Send message Joined: 27 Sep 17 Posts: 190 Credit: 8,321,383 RAC: 557 |
Versions 5.2 and 6.0 are unsupported as of July 2020 per the virtualbox.org website. https://www.virtualbox.org/wiki/Downloads That error message essentially says the computer is to 'busy' to communicate with the boinc virtualbox wrapper in a timely manor. It has happened on all version of Virtual Box but the 5 version it happens a lot less. You can try the forums over at LHC at home as they have a lot more project that use virtual box and the forum is active to see if there are any fixes. I had that problem when I would have too many VMs running at one time and the data directory was on a conventional hard disk. I use the app_config.xml method to control the number of concurrent tasks along with the number of cpus assigned to each VM. I had to go down to using only 8 cores total and skipping using up to 16 with hyperthreading/SMT on my platform. I can run two VMs of 4 cores each for Cosmology at home but if I allow 3 concurrent tasks, I sometimes see that error. I am on Virtual Box 6.1.16 |
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Jim1348 Send message Joined: 17 Nov 14 Posts: 135 Credit: 5,412,499 RAC: 0 |
Versions 5.2 and 6.0 are unsupported as of July 2020 per the virtualbox.org website. But this project is totally unsupported. We are on our own. Use 5.2.x. |
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maeax Send message Joined: 21 Dec 17 Posts: 31 Credit: 8,393,592 RAC: 383 |
2021-10-15 17:29:40 (8584): ERROR: Vboxwrapper lost communication with VirtualBox, rescheduling task for a later time. |
