Estimates the runtimes of jobs using the random forest implemented in ranger.
Observed runtimes are retrieved from the Registry and runtimes are
predicted for unfinished jobs.
The estimated remaining time is calculated in the print method.
You may also pass n here to determine the number of parallel jobs which is then used
in a simple Longest Processing Time (LPT) algorithm to give an estimate for the parallel runtime.
Usage
estimateRuntimes(tab, ..., reg = getDefaultRegistry())
# S3 method for class 'RuntimeEstimate'
print(x, n = 1L, ...)Arguments
- tab
[
data.table]
Table with column “job.id” and additional columns to predict the runtime. Observed runtimes will be looked up in the registry and serve as dependent variable. All columns intabexcept “job.id” will be passed torangeras independent variables to fit the model.- ...
[ANY]
Additional parameters passed toranger. Ignored for theprintmethod.- reg
[
Registry]
Registry. If not explicitly passed, uses the default registry (seesetDefaultRegistry).- x
[
RuntimeEstimate]
Object to print.- n
[
integer(1)]
Number of parallel jobs to assume for runtime estimation.
Value
[RuntimeEstimate] which is a list with two named elements:
“runtimes” is a data.table with columns “job.id”,
“runtime” (in seconds) and “type” (“estimated” if runtime is estimated,
“observed” if runtime was observed).
The other element of the list named “model”] contains the fitted random forest object.
Examples
# Create a simple toy registry
set.seed(1)
tmp = makeExperimentRegistry(file.dir = NA, make.default = FALSE, seed = 1)
#> No readable configuration file found
#> Created registry in '/tmp/batchtools-example/reg' using cluster functions 'Interactive'
addProblem(name = "iris", data = iris, fun = function(data, ...) nrow(data), reg = tmp)
#> Adding problem 'iris'
addAlgorithm(name = "nrow", function(instance, ...) nrow(instance), reg = tmp)
#> Adding algorithm 'nrow'
addAlgorithm(name = "ncol", function(instance, ...) ncol(instance), reg = tmp)
#> Adding algorithm 'ncol'
addExperiments(algo.designs = list(nrow = data.table::CJ(x = 1:50, y = letters[1:5])), reg = tmp)
#> Adding 250 experiments ('iris'[1] x 'nrow'[250] x repls[1]) ...
addExperiments(algo.designs = list(ncol = data.table::CJ(x = 1:50, y = letters[1:5])), reg = tmp)
#> Adding 250 experiments ('iris'[1] x 'ncol'[250] x repls[1]) ...
# We use the job parameters to predict runtimes
tab = unwrap(getJobPars(reg = tmp))
# First we need to submit some jobs so that the forest can train on some data.
# Thus, we just sample some jobs from the registry while grouping by factor variables.
library(data.table)
ids = tab[, .SD[sample(nrow(.SD), 5)], by = c("problem", "algorithm", "y")]
setkeyv(ids, "job.id")
submitJobs(ids, reg = tmp)
#> Submitting 50 jobs in 50 chunks using cluster functions 'Interactive' ...
waitForJobs(reg = tmp)
#> [1] TRUE
# We "simulate" some more realistic runtimes here to demonstrate the functionality:
# - Algorithm "ncol" is 5 times more expensive than "nrow"
# - x has no effect on the runtime
# - If y is "a" or "b", the runtimes are really high
runtime = function(algorithm, x, y) {
ifelse(algorithm == "nrow", 100L, 500L) + 1000L * (y %in% letters[1:2])
}
tmp$status[ids, done := done + tab[ids, runtime(algorithm, x, y)]]
#> Key: <job.id>
#> job.id def.id submitted started done error mem.used resource.id
#> <int> <int> <num> <num> <num> <char> <num> <int>
#> 1: 1 1 NA NA NA <NA> NA NA
#> 2: 2 2 NA NA NA <NA> NA NA
#> 3: 3 3 NA NA NA <NA> NA NA
#> 4: 4 4 NA NA NA <NA> NA NA
#> 5: 5 5 NA NA NA <NA> NA NA
#> ---
#> 496: 496 496 NA NA NA <NA> NA NA
#> 497: 497 497 NA NA NA <NA> NA NA
#> 498: 498 498 NA NA NA <NA> NA NA
#> 499: 499 499 1747928917 1747928917 1747929417 <NA> NA 1
#> 500: 500 500 NA NA NA <NA> NA NA
#> batch.id log.file job.hash job.name repl
#> <char> <char> <char> <char> <int>
#> 1: <NA> <NA> <NA> <NA> 1
#> 2: <NA> <NA> <NA> <NA> 1
#> 3: <NA> <NA> <NA> <NA> 1
#> 4: <NA> <NA> <NA> <NA> 1
#> 5: <NA> <NA> <NA> <NA> 1
#> ---
#> 496: <NA> <NA> <NA> <NA> 1
#> 497: <NA> <NA> <NA> <NA> 1
#> 498: <NA> <NA> <NA> <NA> 1
#> 499: cfInteractive <NA> job951a87685b71d8195f88203cff814b3f <NA> 1
#> 500: <NA> <NA> <NA> <NA> 1
rjoin(sjoin(tab, ids), getJobStatus(ids, reg = tmp)[, c("job.id", "time.running")])
#> Key: <job.id>
#> job.id problem algorithm x y time.running
#> <int> <char> <char> <int> <char> <difftime>
#> 1: 32 iris nrow 7 b 1100.0354 secs
#> 2: 42 iris nrow 9 b 1100.0333 secs
#> 3: 47 iris nrow 10 b 1100.0337 secs
#> 4: 66 iris nrow 14 a 1100.0387 secs
#> 5: 73 iris nrow 15 c 100.0342 secs
#> 6: 75 iris nrow 15 e 100.0336 secs
#> 7: 86 iris nrow 18 a 1100.0329 secs
#> 8: 100 iris nrow 20 e 100.0333 secs
#> 9: 101 iris nrow 21 a 1100.0331 secs
#> 10: 103 iris nrow 21 c 100.0380 secs
#> 11: 123 iris nrow 25 c 100.0336 secs
#> 12: 125 iris nrow 25 e 100.0330 secs
#> 13: 161 iris nrow 33 a 1100.0332 secs
#> 14: 165 iris nrow 33 e 100.0328 secs
#> 15: 169 iris nrow 34 d 100.0327 secs
#> 16: 183 iris nrow 37 c 100.0344 secs
#> 17: 184 iris nrow 37 d 100.0342 secs
#> 18: 203 iris nrow 41 c 100.0332 secs
#> 19: 207 iris nrow 42 b 1100.0330 secs
#> 20: 209 iris nrow 42 d 100.0331 secs
#> 21: 220 iris nrow 44 e 100.0332 secs
#> 22: 227 iris nrow 46 b 1100.0344 secs
#> 23: 229 iris nrow 46 d 100.0335 secs
#> 24: 231 iris nrow 47 a 1100.0330 secs
#> 25: 244 iris nrow 49 d 100.0329 secs
#> 26: 260 iris ncol 2 e 500.0329 secs
#> 27: 276 iris ncol 6 a 1500.0373 secs
#> 28: 278 iris ncol 6 c 500.0340 secs
#> 29: 279 iris ncol 6 d 500.0332 secs
#> 30: 296 iris ncol 10 a 1500.0330 secs
#> 31: 320 iris ncol 14 e 500.0335 secs
#> 32: 340 iris ncol 18 e 500.0356 secs
#> 33: 347 iris ncol 20 b 1500.0350 secs
#> 34: 363 iris ncol 23 c 500.0341 secs
#> 35: 369 iris ncol 24 d 500.0333 secs
#> 36: 373 iris ncol 25 c 500.0332 secs
#> 37: 387 iris ncol 28 b 1500.0345 secs
#> 38: 410 iris ncol 32 e 500.0397 secs
#> 39: 421 iris ncol 35 a 1500.0358 secs
#> 40: 436 iris ncol 38 a 1500.0344 secs
#> 41: 444 iris ncol 39 d 500.0333 secs
#> 42: 448 iris ncol 40 c 500.0330 secs
#> 43: 456 iris ncol 42 a 1500.0329 secs
#> 44: 459 iris ncol 42 d 500.0341 secs
#> 45: 467 iris ncol 44 b 1500.0336 secs
#> 46: 468 iris ncol 44 c 500.0331 secs
#> 47: 475 iris ncol 45 e 500.0331 secs
#> 48: 482 iris ncol 47 b 1500.0331 secs
#> 49: 492 iris ncol 49 b 1500.0342 secs
#> 50: 499 iris ncol 50 d 500.0333 secs
#> job.id problem algorithm x y time.running
# Estimate runtimes:
est = estimateRuntimes(tab, reg = tmp)
print(est)
#> Runtime Estimate for 500 jobs with 1 CPUs
#> Done : 0d 09h 43m 21.7s
#> Remaining: 3d 17h 36m 44.4s
#> Total : 4d 03h 20m 6.1s
rjoin(tab, est$runtimes)
#> Key: <job.id>
#> job.id problem algorithm x y type runtime
#> <int> <char> <char> <int> <char> <fctr> <num>
#> 1: 1 iris nrow 1 a estimated 1105.4888
#> 2: 2 iris nrow 1 b estimated 1089.4428
#> 3: 3 iris nrow 1 c estimated 338.4811
#> 4: 4 iris nrow 1 d estimated 317.7063
#> 5: 5 iris nrow 1 e estimated 317.3769
#> ---
#> 496: 496 iris ncol 50 a estimated 1386.5528
#> 497: 497 iris ncol 50 b estimated 1393.2825
#> 498: 498 iris ncol 50 c estimated 616.0559
#> 499: 499 iris ncol 50 d observed 500.0333
#> 500: 500 iris ncol 50 e estimated 577.2086
print(est, n = 10)
#> Runtime Estimate for 500 jobs with 10 CPUs
#> Done : 0d 09h 43m 21.7s
#> Remaining: 3d 17h 36m 44.4s
#> Parallel : 0d 08h 58m 18.9s
#> Total : 4d 03h 20m 6.1s
# Submit jobs with longest runtime first:
ids = est$runtimes[type == "estimated"][order(runtime, decreasing = TRUE)]
print(ids)
#> job.id type runtime
#> <int> <fctr> <num>
#> 1: 466 estimated 1423.3334
#> 2: 461 estimated 1421.9401
#> 3: 457 estimated 1418.9934
#> 4: 462 estimated 1418.9933
#> 5: 472 estimated 1416.1467
#> ---
#> 446: 164 estimated 133.9708
#> 447: 185 estimated 133.4605
#> 448: 204 estimated 131.8194
#> 449: 174 estimated 131.6208
#> 450: 179 estimated 130.4743
if (FALSE) { # \dontrun{
submitJobs(ids, reg = tmp)
} # }
# Group jobs into chunks with runtime < 1h
ids = est$runtimes[type == "estimated"]
ids[, chunk := binpack(runtime, 3600)]
#> Key: <job.id>
#> job.id type runtime chunk
#> <int> <fctr> <num> <int>
#> 1: 1 estimated 1105.4888 48
#> 2: 2 estimated 1089.4428 51
#> 3: 3 estimated 338.4811 38
#> 4: 4 estimated 317.7063 34
#> 5: 5 estimated 317.3769 71
#> ---
#> 446: 495 estimated 582.1432 15
#> 447: 496 estimated 1386.5528 19
#> 448: 497 estimated 1393.2825 14
#> 449: 498 estimated 616.0559 4
#> 450: 500 estimated 577.2086 22
print(ids)
#> Key: <job.id>
#> job.id type runtime chunk
#> <int> <fctr> <num> <int>
#> 1: 1 estimated 1105.4888 48
#> 2: 2 estimated 1089.4428 51
#> 3: 3 estimated 338.4811 38
#> 4: 4 estimated 317.7063 34
#> 5: 5 estimated 317.3769 71
#> ---
#> 446: 495 estimated 582.1432 15
#> 447: 496 estimated 1386.5528 19
#> 448: 497 estimated 1393.2825 14
#> 449: 498 estimated 616.0559 4
#> 450: 500 estimated 577.2086 22
print(ids[, list(runtime = sum(runtime)), by = chunk])
#> chunk runtime
#> <int> <num>
#> 1: 48 3484.913
#> 2: 51 3598.783
#> 3: 38 3593.102
#> 4: 34 3595.497
#> 5: 71 3491.750
#> 6: 49 3476.698
#> 7: 55 3584.071
#> 8: 68 3500.145
#> 9: 72 3488.432
#> 10: 52 3593.853
#> 11: 56 3574.637
#> 12: 69 3496.757
#> 13: 73 3482.072
#> 14: 57 3568.717
#> 15: 70 3493.656
#> 16: 74 3474.399
#> 17: 46 3519.930
#> 18: 50 3599.212
#> 19: 43 3567.890
#> 20: 64 3516.088
#> 21: 66 3512.282
#> 22: 44 3533.450
#> 23: 65 3515.292
#> 24: 67 3509.240
#> 25: 39 3598.642
#> 26: 37 3599.298
#> 27: 63 3526.087
#> 28: 47 3493.974
#> 29: 53 3598.537
#> 30: 40 3586.379
#> 31: 59 3547.232
#> 32: 42 3579.433
#> 33: 61 3537.082
#> 34: 62 3531.756
#> 35: 41 3584.106
#> 36: 58 3554.779
#> 37: 60 3540.276
#> 38: 54 3596.246
#> 39: 45 3531.543
#> 40: 36 3594.233
#> 41: 35 3598.056
#> 42: 28 3595.929
#> 43: 26 3593.732
#> 44: 25 3597.452
#> 45: 27 3597.697
#> 46: 30 3569.959
#> 47: 29 3575.673
#> 48: 75 3599.401
#> 49: 20 3522.400
#> 50: 8 3594.584
#> 51: 31 3599.933
#> 52: 6 3595.630
#> 53: 7 3599.756
#> 54: 12 3563.299
#> 55: 5 3599.159
#> 56: 11 3575.426
#> 57: 33 3599.394
#> 58: 10 3578.377
#> 59: 32 3599.955
#> 60: 82 3599.552
#> 61: 83 3597.562
#> 62: 4 3598.579
#> 63: 79 3487.425
#> 64: 80 3476.107
#> 65: 3 3599.441
#> 66: 85 3579.059
#> 67: 91 2034.999
#> 68: 81 3471.034
#> 69: 77 3519.667
#> 70: 88 3556.815
#> 71: 87 3565.184
#> 72: 78 3503.314
#> 73: 89 3548.820
#> 74: 84 3587.370
#> 75: 90 3532.212
#> 76: 86 3570.203
#> 77: 2 3599.797
#> 78: 1 3599.108
#> 79: 76 3584.637
#> 80: 9 3584.215
#> 81: 22 3596.042
#> 82: 18 3572.756
#> 83: 13 3598.577
#> 84: 21 3599.206
#> 85: 19 3568.695
#> 86: 16 3586.323
#> 87: 23 3588.038
#> 88: 17 3578.963
#> 89: 24 3596.707
#> 90: 15 3598.113
#> 91: 14 3599.616
#> chunk runtime
if (FALSE) { # \dontrun{
submitJobs(ids, reg = tmp)
} # }
# Group jobs into 10 chunks with similar runtime
ids = est$runtimes[type == "estimated"]
ids[, chunk := lpt(runtime, 10)]
#> Key: <job.id>
#> job.id type runtime chunk
#> <int> <fctr> <num> <int>
#> 1: 1 estimated 1105.4888 3
#> 2: 2 estimated 1089.4428 4
#> 3: 3 estimated 338.4811 4
#> 4: 4 estimated 317.7063 8
#> 5: 5 estimated 317.3769 3
#> ---
#> 446: 495 estimated 582.1432 3
#> 447: 496 estimated 1386.5528 5
#> 448: 497 estimated 1393.2825 9
#> 449: 498 estimated 616.0559 1
#> 450: 500 estimated 577.2086 6
print(ids[, list(runtime = sum(runtime)), by = chunk])
#> chunk runtime
#> <int> <num>
#> 1: 3 32291.13
#> 2: 4 32224.38
#> 3: 8 32229.12
#> 4: 2 32297.83
#> 5: 10 32224.59
#> 6: 1 32224.44
#> 7: 7 32298.11
#> 8: 5 32291.41
#> 9: 9 32298.94
#> 10: 6 32224.48