taskqueue (version 0.2.0)

resource_add: Add a New Computing Resource

Description

Registers a new computing resource (HPC cluster or computer) in the database for use with taskqueue projects.

Usage

resource_add(
  name,
  type = c("slurm", "computer"),
  host,
  workers,
  log_folder,
  username = NULL,
  nodename = strsplit(host, "\\.")[[1]][1],
  con = NULL
)

Value

Invisibly returns NULL. Called for side effects (adding resource to database).

Arguments

name

Character string for the resource name. Must be unique.

type

Type of resource. Currently supported: "slurm" for SLURM clusters or "computer" for standalone machines.

host

Hostname or IP address of the resource. For SLURM clusters, this should be the login/head node.

workers

Maximum number of concurrent workers/cores available on this resource (integer).

log_folder

Absolute path to the directory where log files will be stored. Must be an absolute path (Linux or Windows format). Directory will contain subdirectories for each project.

username

Username for SSH connection to the resource. If NULL (default), uses the current user from Sys.info()["user"].

nodename

Node name as obtained by Sys.info()["nodename"] on the resource. Default extracts the hostname from host.

con

An optional database connection. If NULL, a new connection is created and closed automatically.

Details

The log_folder is critical for troubleshooting. It stores:

• SLURM job output and error files

• Task execution logs

• R worker scripts

Choose a high-speed storage location if possible due to frequent I/O operations.

If a resource with the same name already exists, this function will fail due to uniqueness constraints.

See Also

resource_get, resource_list, project_resource_add

Examples

if (FALSE) {
# Not run:
# Add a SLURM cluster resource
resource_add(
  name = "hpc",
  type = "slurm",
  host = "hpc.university.edu",
  workers = 500,
  log_folder = "/home/user/taskqueue_logs/"
)

# Add with explicit username
resource_add(
  name = "hpc2",
  type = "slurm",
  host = "cluster.lab.org",
  workers = 200,
  log_folder = "/scratch/taskqueue/logs/",
  username = "johndoe"
)

# Verify resource was added
resource_list()
}