Standalone Instance to Multi-Worker Instance

Install, Configure and Update
1

Hi,

I have CS installed as standalone and would like to add a new worker. Could I just add the new worked to the standalone installation or I need to start with new installation?

Thanks

2

Hi @Elad,

Yes, you can use the cryosparcw connect command to add a new workstation to your existing standalone instance without having to reinstall cryoSPARC. See here for detailed instructions:
https://guide.cryosparc.com/setup-configuration-and-management/how-to-download-install-and-configure/downloading-and-installing-cryosparc#connecting-a-worker-node

3

Thanks @stephan,

I have install and connected the new worker to the master but after connecting I see info in the gpu’s list:

Final configuration for viper
cache_path : /scr/
cache_quota_mb : 800000
cache_reserve_mb : 10000
desc : None
gpus : [{‘id’: 0, ‘mem’: 11554717696, ‘name’: ‘GeForce RTX 2080 Ti’}, {‘id’: 1, ‘mem’: 11554717696, ‘name’: ‘GeForce RTX 2080 Ti’}, {‘id’: 2, ‘mem’: 11554717696, ‘name’: ‘GeForce RTX 2080 Ti’}, {‘id’: 3, ‘mem’: 11554717696, ‘name’: ‘GeForce RTX 2080 Ti’}]
hostname : viper.csb.vanderbilt.edu
lane : viper
monitor_port : None
name : viper
resource_fixed : {‘SSD’: True}
resource_slots : {‘CPU’: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95], ‘GPU’: [0, 1, 2, 3], ‘RAM’: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63]}
ssh_str : userxxx@viper
title : Worker node viper
type : node
worker_bin_path : /scr/software/cryosparc_worker/bin/cryosparcw

but the GPU are A6000

in/cryosparcw gpulist
Detected 4 CUDA devices.

id pci-bus name

   0      0000:18:00.0  RTX A6000
   1      0000:3B:00.0  RTX A6000
   2      0000:86:00.0  RTX A6000
   3      0000:AF:00.0  RTX A6000

and getting this error when try to run job (I have SSH key-pair setup and):

License is valid.

Launching job on lane viper target viper.csb.vanderbilt.edu …

Running job on remote worker node hostname viper.xxx.yyy.edu

Failed to launch! 255
b’ssh_askpass: exec(/usr/libexec/openssh/ssh-askpass): No such file or directory\r\nHost key verification failed.\r\n’

4

any idea how to fix it?

5

Hi @Elad,

Check out this issue: Failed to launch! 255 Host key verification failed?

6

Have look at this.
When I do:
“Can you confirm, if you log onto the master node kraken.biosci.utexas.edu as cryosparc_user and try to execute the command ssh cryosparc_user@javelina.biosci.utexas.edu bash -c "whoami" , there is no error, or confirmation to verify the host?”

I have no error and get the ssh to work