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Ticket #1693 (closed enhancement: fixed)

Opened 12 years ago

Last modified 8 years ago

Fixup solution I/O when performing enumeration

Reported by: wehart Owned by: jeckstei
Priority: minor Milestone: Acro 2.1
Component: PEBBL Version: PEBBL 1.2
Keywords: Cc:
Subcomponent: Source Code

Description (last modified by jeckstei) (diff)

There are two parts to writing solution info that need to be updated for enumeration. First,there's the ordinary writing or solutions to files. Second there's the "earlyOutput" feature, which writes creates a solution file whenever a new incumbent has established itself for a certain amount of time.

Eventually, I think we'd want enumeration to print the best solution value found, rather than just not printing anything.

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comment:1 Changed 12 years ago by jeckstei

  • op_sys changed from other to All
  • severity changed from normal to enhancement

The "printing nothing" part of this bug has been fixed.

What remains are some enhancements:

  1. Have "early output" to dump more than one solution
  1. Do some smart signal handling of C, so that you get the solution

repository at the time you stop the run.

comment:2 Changed 9 years ago by wehart

  • Status changed from new to assigned
  • Description modified (diff)
  • Component changed from PICO to PEBBL
  • Priority changed from high to normal
  • Version changed from Beta to PEBBL 1.2
  • Milestone set to PEBBL 1.3
  • Owner changed from pico-developers to caphill

comment:3 Changed 9 years ago by jdsiiro

  • Priority changed from normal to minor
  • severity minor deleted

Converting all severities into priorities and deprecating the severity field.

comment:4 Changed 9 years ago by jeckstei

  • Description modified (diff)
  • Milestone changed from PEBBL 1.3 to PEBBL 1.4

I am not sure making early output dump more than one solution is a good idea, at least the way early output currently works. It could result in quadratically increasing overhead as the run progresses.

Since the "printing nothing" part is fixed, I'm pushing this off to the next release; maybe we should rename it "redesign early output".

comment:5 Changed 9 years ago by jeckstei

  • Owner changed from caphill to jeckstei

I think the best way to handle this is by using the checkpoint feature. The repository is checkpointed, but in a separate file for each processor in binary format. I can create a command-line option to just read in a checkpoint and immediately write a text-formatted sorted repository.

Once we have this feature, we might want to consider phasing out the earlyOutput feature.

comment:6 Changed 8 years ago by jeckstei

  • Status changed from assigned to closed
  • Resolution set to fixed

comment:7 Changed 8 years ago by jdsiiro

  • Milestone changed from PEBBL 1.4 to Acro 2.1

(deleting PEBBL 1.4 milestone)

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