use humanfriendly walltime specifications

Snakefile

@@ -9,7 +9,7 @@ import yaml
 
 from snakemake.utils import min_version
 
-min_version("8")
+min_version("8.5")
 
 from scripts._helpers import path_provider
 

config/config.default.yaml

@@ -813,8 +813,8 @@ solving:
     cbc-default: {} # Used in CI
     glpk-default: {} # Used in CI
 
-  mem: 30000 #memory in MB; 20 GB enough for 50+B+I+H2; 100 GB for 181+B+I+H2
+  mem_mb: 30000 #memory in MB; 20 GB enough for 50+B+I+H2; 100 GB for 181+B+I+H2
-  walltime: "12:00:00"
+  runtime: 6h #runtime in humanfriendly style https://humanfriendly.readthedocs.io/en/latest/
 
 # docs in https://pypsa-eur.readthedocs.io/en/latest/configuration.html#plotting
 plotting:

envs/environment.yaml

@@ -20,7 +20,7 @@ dependencies:
 - openpyxl!=3.1.1
 - pycountry
 - seaborn
-- snakemake-minimal>=8
+- snakemake-minimal>=8.5
 - memory_profiler
 - yaml
 - pytables

rules/solve_electricity.smk

@@ -29,7 +29,7 @@ rule solve_network:
     threads: solver_threads
     resources:
         mem_mb=memory,
-        walltime=config_provider("solving", "walltime", default="12:00:00"),
+        runtime=config_provider("solving", "runtime", default="6h"),
     shadow:
         "minimal"
     conda:
@@ -60,7 +60,7 @@ rule solve_operations_network:
     threads: 4
     resources:
         mem_mb=(lambda w: 10000 + 372 * int(w.clusters)),
-        walltime=config_provider("solving", "walltime", default="12:00:00"),
+        runtime=config_provider("solving", "runtime", default="6h"),
     shadow:
         "minimal"
     conda:

rules/solve_myopic.smk

@@ -132,8 +132,8 @@ rule solve_sector_network_myopic:
         + "logs/elec_s{simpl}_{clusters}_l{ll}_{opts}_{sector_opts}_{planning_horizons}_python.log",
     threads: solver_threads
     resources:
-        mem_mb=config_provider("solving", "mem"),
+        mem_mb=config_provider("solving", "mem_mb"),
-        walltime=config_provider("solving", "walltime", default="12:00:00"),
+        runtime=config_provider("solving", "runtime", default="6h"),
     benchmark:
         (
             RESULTS

rules/solve_overnight.smk

@@ -30,8 +30,8 @@ rule solve_sector_network:
         + "logs/elec_s{simpl}_{clusters}_l{ll}_{opts}_{sector_opts}_{planning_horizons}_python.log",
     threads: solver_threads
     resources:
-        mem_mb=config_provider("solving", "mem"),
+        mem_mb=config_provider("solving", "mem_mb"),
-        walltime=config_provider("solving", "walltime", default="12:00:00"),
+        runtime=config_provider("solving", "runtime", default="6h"),
     benchmark:
         (
             RESULTS