forked from M-Labs/artiq
69 lines
1.8 KiB
ReStructuredText
69 lines
1.8 KiB
ReStructuredText
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FAQ
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###
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How do I ...
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============
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override the sysclk frequency of just one dds?
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----------------------------------------------
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Override the parameter using an argument in the ddb.
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organize parameters in folders?
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-------------------------------
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Use gui auto-completion and filtering.
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Names need to be unique.
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enforce functional dependencies between parameters?
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---------------------------------------------------
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Use wrapper experiments, overriding parameters of arguments.
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get rid of `DbKeys`?
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--------------------
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`DbKeys` enforces valid parameter/argument names, references
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keys in pdb and hints at metadata on how values can be retrieved.
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write a generator feeding a kernel feeding an analyze function?
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---------------------------------------------------------------
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Like this::
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def run(self):
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self.parse(self.pipe(iter(range(10))))
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def pipe(self, gen):
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for i in gen:
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r = self.do(i)
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yield r
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def parse(self, gen):
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for i in gen:
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pass
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@kernel
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def do(self, i):
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return i
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create and use variable lengths arrays?
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------------------------------------------------
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Don't. Preallocate everything. Or chunk it and e.g. read 100 events per
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function call, push them upstream and retry until the gate time closes.
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execute multiple slow controller RPCs in parallel without loosing time?
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-----------------------------------------------------------------------
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Use `threading.Thread`: portable, fast, simple for one-shot calls
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write part of my experiment as a coroutine/Task/generator?
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----------------------------------------------------------
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You want to write experiment preparation (`__init__()` or `build()`)
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or analysis (`analyze()`)
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No. That would make reusing your own code in sub-experiments difficult and
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fragile.
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