Get cost of a mode solver simulation

[samuelkim16]

Is there a way to get the cost of a mode solver simulation?

Running web.real_cost('task_id') gives the message

08:49:00 Eastern Daylight Time WARNING: Billed FlexCredit for task              
                               'task_id' is   
                               not available. If the task has been successfully 
                               run, it should be available shortly.```

[momchil-flex]

@samuelkim16 our mode solver is still using some legacy handling including a web api that is separate from our other solvers, and some things unfortunately don't work (well). It is currently being rewritten to unify with the rest of the code (fyi @caseyflex ).

In the meantime, I found a way to get the real cost of a mode solver task after it has been completed, if you know the task_id and solver_id (printed when the task is submitted):

from tidy3d.web.api.mode import ModeSolverTask
task = ModeSolverTask.get(task_id=task_id, solver_id=solver_id)
print(task.real_flex_unit)

Or to do this even more directly without having to re-download the data file,

from tidy3d.web.core.http_util import http
resp = http.get(f"tidy3d/modesolver/py/{task_id}/{solver_id}")
print(resp["charge"])

Of course, you can also just go to our web GUI and see the task cost there, too.

[samuelkim16]

Thank you! Out of curiosity, is there a way to get task_id and solver_id programmatically? I couldn’t find an analogous method to job.task_id.

[caseyflex]

Once it is unified with the rest of the code, you can use the same convenient web api as for the other solvers. For now, I suppose you could use the following workaround, using ModeSolverTask directly to manage the task. I think the task_id and solver_id are set immediately following ModeSolverTask.create.

from tidy3d.web.api.mode import ModeSolverTask
import time
task = ModeSolverTask.create(mode_solver)
task.upload()
task.submit()
prev_status = "draft"
status = task.status
while status not in ("success", "error", "diverged", "deleted"):
    if status != prev_status:
        print(f"Mode solver status: {status}")
        prev_status = status
    time.sleep(0.5)
    status = task.get_info().status
print(task.get_info().real_flex_unit)
mode_solver_data = task.get_result()


task_id = task.task_id
solver_id = task.solver_id