Installation on workstation need for SSH

Install, Configure and Update
1

Trouble following the installation guide for Cryosparc. On a single workstation installation is it necessary to setup password-less SSH access? If so, I don’t know how to properly establish the syntax for this workstation to meet: ssh-copy-id remote_username@remote_hostname.

Thanks. Neal.

2

It is not. Please can you provide additional details:

  1. Outputs of the commands:
    hostname -f
cryosparcm status | grep -v LICENSE
cryosparcm cli "get_scheduler_targets()"
  2. Is it assured that the computers hostname will not change after a reboot?
  3. Are there any plans of adding additional GPU worker nodes to this CryoSPARC instance?
3

Hi, thanks for getting back. The installation goes well until it tries to install the worker The kickback is in the line below. I could rerun the install but direct the command with the path to the current location of the cryosparc_worker directory - /home/cryosparcuser/cryosparc/cryosparc_worker

Would this be the solution?

Thanks. Neal.

Creating the initial CryoSPARC user…

Creating user neal with email: m.n.waxham@uth.tmc.edu and name: Neal Waxham
Successfully created user account.

Installing the CryoSPARC worker package…

./install.sh: line 427: cd: /u/cryosparc_user/cryosparc/cryosparc_worker: No such file or directory

4

progress - changed the install to have the proper path and things went well the worker seemed to be established, but a few steps further got:

Connecting the CryoSPARC worker to the master…

CRYOSPARC CONNECT --------------------------------------------

Attempting to register worker neal-B7105F48TV4HR-2T-N to command neal-B7105F48TV4HR-2T-N:61002
Connecting as unix user cryosparcuser
Will register using ssh string: cryosparcuser@neal-B7105F48TV4HR-2T-N
If this is incorrect, you should re-run this command with the flag --sshstr

Connected to master.

Current connected workers:

Worker will be registered with 32 CPUs.
Autodetecting available GPUs…
Detected 2 CUDA devices.

id pci-bus name

   0               134  NVIDIA GeForce RTX 2080                                                                
   1               216  NVIDIA GeForce RTX 2080

All devices will be enabled now.
This can be changed later using --update

Traceback (most recent call last):
File “bin/connect.py”, line 240, in
cache_path = check_ssd_path()
File “bin/connect.py”, line 116, in check_ssd_path
assert os.path.isdir(cache_path_expand), “Path %s does not exist.” % args.ssdpath
AssertionError: Path /scratch/cryosparc_cache does not exist.

5

The directory you told CryoSPARC to use for SSD caching needs to (a) exist and (b) be writable by the CryoSPARC user.

As a note, CryoSPARC no longer officially supports 8GB GPUs. While a lot of things do still work, you’ll run into memory limits a lot, and sometimes enabling Low Memory Mode isn’t enough.