Calculations taking long (openLCA 2.2)

Question

Hello,

I am trying to compare 5 product systems. Each product system is just one process. The calculations take ~2min per product system. Is this normal? Is there a way to speed up?

I have allocated 30GB out of 32GB RAM towards openLCA. I am running openLCA 2.2 from .exe in unzipped folder located on my local drive. Initially, I did TRACI methodology and then AWARE. No significant difference. See attached screenshot of log file (blue highlighted are for run using TRACI and the bottom 5 are for AWARE).

Thanks,

Answer 1

Hi, the time needed does not really depend on the LCIA method but on the size of your product system which in term is influenced by the database you are using. Could you explain please? Thank you, Andreas

Comments

Thanks for prompt response.

I am using Ecoinvent 3.10 databases and unit processes.

See copy-paste from log file: (I was planning to upload a screenshot log file, but wasn't successful and forgot to update my question)

15:18:44    INFO    org.openlca.core.math.SystemCalculator    calculate result for RootEntity [type=ProductSystem, refId=a1c49833-6e84-4d22-94d5-c6c8e051bd64, name=ammonia production, steam reforming, liquid | ammonia, anhydrous, liquid | APOS, U - RNA]
15:20:50    INFO    org.openlca.core.math.SystemCalculator    selected provider org.openlca.core.results.providers.FactorizationSolver@1d2b5f79
15:20:50    INFO    org.openlca.core.math.SystemCalculator    calculate result for RootEntity [type=ProductSystem, refId=db910fbe-b67b-4519-9cf9-b4339b43376a, name=ammonia_production_partial oxidation, liquid APOS U CN]
15:22:30    INFO    org.openlca.core.math.SystemCalculator    selected provider org.openlca.core.results.providers.FactorizationSolver@7ac4caa6
15:22:30    INFO    org.openlca.core.math.SystemCalculator    calculate result for RootEntity [type=ProductSystem, refId=c0b1cdbc-6edf-4a1d-b4f2-7a4b32f6c94b, name=market for ammonia, anhydrous, liquid | ammonia, anhydrous, liquid | APOS, U - CN]
15:24:11    INFO    org.openlca.core.math.SystemCalculator    selected provider org.openlca.core.results.providers.FactorizationSolver@7e9c69f
15:24:11    INFO    org.openlca.core.math.SystemCalculator    calculate result for RootEntity [type=ProductSystem, refId=259a24d0-7190-47b6-a082-1dd1cb350483, name=market for ammonia, anhydrous, liquid | ammonia, anhydrous, liquid | APOS, U - RER]
15:26:27    INFO    org.openlca.core.math.SystemCalculator    selected provider org.openlca.core.results.providers.FactorizationSolver@1e6f5ec1
15:26:27    INFO    org.openlca.core.math.SystemCalculator    calculate result for RootEntity [type=ProductSystem, refId=17ed96e5-c2fb-4a3d-96f2-1edb92d1f7e8, name=market for ammonia, anhydrous, liquid | ammonia, anhydrous, liquid | APOS, U - RNA]
15:28:22    INFO    org.openlca.core.math.SystemCalculator    selected provider org.openlca.core.results.providers.FactorizationSolver@447b1126

Thanks,

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Hello, do you have any additional thoughts or guidance to help me speed up the calculations? Thanks.