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Hi,
I gave the following command:
lean data generate --start=20100101 --symbol-count=1and got the error that follows:
Symbol[1]: KYQ 2T Progress: 100.0% - Symbol data generation and output completed
Random data generation has completed.
Launching coarse data generator...
20210702 18:03:06.133 TRACE:: Config.Get(): Configuration key not found. Key: reserved-words-prefix - Using default
value: quantconnect-
20210702 18:03:06.202 TRACE:: CoarseUniverseGeneratorProgram.ProcessDailyFolder(): Processing:
/Lean/Data/equity/usa/daily
Unhandled exception. System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values.
(Parameter 'MaxDegreeOfParallelism')
at System.Threading.Tasks.ParallelOptions.set_MaxDegreeOfParallelism(Int32 value)
at QuantConnect.ToolBox.CoarseUniverseGenerator.CoarseUniverseGeneratorProgram.Run() in /LeanCloud/CI.Builder/bin/De
bug/src/QuantConnect/Lean/ToolBox/CoarseUniverseGenerator/CoarseUniverseGeneratorProgram.cs:line 134
at QuantConnect.ToolBox.CoarseUniverseGenerator.CoarseUniverseGeneratorProgram.CoarseUniverseGenerator() in /LeanClo
ud/CI.Builder/bin/Debug/src/QuantConnect/Lean/ToolBox/CoarseUniverseGenerator/CoarseUniverseGeneratorProgram.cs:line 65
at QuantConnect.ToolBox.RandomDataGenerator.RandomDataGeneratorProgram.RandomDataGenerator(String startDateString,
String endDateString, String symbolCountString, String market, String securityTypeString, String resolutionString,
String dataDensityString, String includeCoarseString, String quoteTradeRatioString, String randomSeed, String
hasIpoPercentageString, String hasRenamePercentageString, String hasSplitsPercentageString, String
hasDividendsPercentageString, String dividendEveryQuarterPercentageString) in
/LeanCloud/CI.Builder/bin/Debug/src/QuantConnect/Lean/ToolBox/RandomDataGenerator/RandomDataGeneratorProgram.cs:line 66
at QuantConnect.ToolBox.Program.Main(String[] args) in
/LeanCloud/CI.Builder/bin/Debug/src/QuantConnect/Lean/ToolBox/Program.cs:line 266
Error: Something went wrong while running the random data generator, see the logs above for more informationThe data seems to be correctly generated, but I wonder what is the meaning of this error.
Any idea?
Thanks!
Jasper van Merle
Hi Giuseppe,
This error happens when you run the coarse universe generator on a single processor. Although the price data will be generated correctly, the coarse universe data will be missing because of this error. I have created a pull request on GitHub to fix it, after it is merged you can update to the latest version using the `--update` flag on `lean data generate`.
Giuseppe Mazza
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