diff --git a/WL_list.md b/WL_list.md
index 0d87deb7f15d2beaa22f4d2958e9ddcc1a2a143d..8eee8492c4a1b2e5bfbf7aca6de6c5d4e878f4c6 100644
--- a/WL_list.md
+++ b/WL_list.md
@@ -21,22 +21,22 @@ where:
 
 | Experiment |  WL repo  | SIF image registry | Docker image registry| Latest Built Version | Latest Pipeline status | Unpacked container size | 
 | -------- | -------- | -------- | -------- | -------- | -------- | -------- |
-| alice | [digi-reco-core-run3-ma][alice_digi-reco-core-run3-ma_code] | [click for link][alice_digi-reco-core-run3-ma_sif] | [click for link][alice_digi-reco-core-run3-ma_img] | [ci-v3.0][alice_digi-reco-core-run3-ma_pipelink] | ![ci][alice_digi-reco-core-run3-ma_pipeline]|  16G  |
-| atlas | [gen_sherpa-ma][atlas_gen_sherpa-ma_code] | [click for link][atlas_gen_sherpa-ma_sif] | [click for link][atlas_gen_sherpa-ma_img] | [ci-v2.2][atlas_gen_sherpa-ma_pipelink] | ![ci][atlas_gen_sherpa-ma_pipeline]| 22G |
-| atlas | [reco_mt-ma][atlas_reco_mt-ma_code] | [click for link][atlas_reco_mt-ma_sif] | [click for link][atlas_reco_mt-ma_img] | [v2.3][atlas_reco_mt-ma_pipelink] | ![ci][atlas_reco_mt-ma_pipeline]|     22G     |
-| atlas | [sim_mt-ma][atlas_sim_mt-ma_code] | [click for link][atlas_sim_mt-ma_sif] | [click for link][atlas_sim_mt-ma_img] | [v2.1][atlas_sim_mt-ma_pipelink] | ![ci][atlas_sim_mt-ma_pipeline]|    20G    |
-| belle2 | [gen-sim-reco-ma][belle2_gen-sim-reco-ma_code] | [click for link][belle2_gen-sim-reco-ma_sif] | [click for link][belle2_gen-sim-reco-ma_img] | [v2.2][belle2_gen-sim-reco-ma_pipelink] | ![ci][belle2_gen-sim-reco-ma_pipeline]|               3.4G               |
-| cms | [digi-run3-ma][cms_digi-run3-ma_code] | [click for link][cms_digi-run3-ma_sif] | [click for link][cms_digi-run3-ma_img] | [v1.1][cms_digi-run3-ma_pipelink] | ![ci][cms_digi-run3-ma_pipeline]|            5.8G            |
-| cms | [gen-sim-run3-ma][cms_gen-sim-run3-ma_code] | [click for link][cms_gen-sim-run3-ma_sif] | [click for link][cms_gen-sim-run3-ma_img] | [v1.1][cms_gen-sim-run3-ma_pipelink] | ![ci][cms_gen-sim-run3-ma_pipeline]|                          6.2G                          |
-| cms | [hlt-ma][cms_hlt-ma_code] | [click for link][cms_hlt-ma_sif] | [click for link][cms_hlt-ma_img] | [v0.2][cms_hlt-ma_pipelink] | ![ci][cms_hlt-ma_pipeline]|                  19G                  |
-| cms | [mlpf][cms_mlpf_code] | [click for link][cms_mlpf_sif] | [click for link][cms_mlpf_img] | [v0.1][cms_mlpf_pipelink] | ![ci][cms_mlpf_pipeline]|                                                        |
-| cms | [reco-run3-ma][cms_reco-run3-ma_code] | [click for link][cms_reco-run3-ma_sif] | [click for link][cms_reco-run3-ma_img] | [v1.2][cms_reco-run3-ma_pipelink] | ![ci][cms_reco-run3-ma_pipeline]|             6.5G             |
-| hello | [world-c7-ma][hello_world-c7-ma_code] | [click for link][hello_world-c7-ma_sif] | [click for link][hello_world-c7-ma_img] | [v1.0][hello_world-c7-ma_pipelink] | ![ci][hello_world-c7-ma_pipeline]|     759M     |
-| hello | [world-cs8-ma][hello_world-cs8-ma_code] | [click for link][hello_world-cs8-ma_sif] | [click for link][hello_world-cs8-ma_img] | [ci-v1.0][hello_world-cs8-ma_pipelink] | ![ci][hello_world-cs8-ma_pipeline]|                518M                |
-| igwn | [pe][igwn_pe_code] | [click for link][igwn_pe_sif] | [click for link][igwn_pe_img] | [v0.5][igwn_pe_pipelink] | ![ci][igwn_pe_pipeline]|       2.9G       |
-| juno | [gen-sim-reco][juno_gen-sim-reco_code] | [click for link][juno_gen-sim-reco_sif] | [click for link][juno_gen-sim-reco_img] | [v3.1][juno_gen-sim-reco_pipelink] | ![ci][juno_gen-sim-reco_pipeline]|  3.3G  |
-| lhcb | [sim-run3-ma][lhcb_sim-run3-ma_code] | [click for link][lhcb_sim-run3-ma_sif] | [click for link][lhcb_sim-run3-ma_img] | [v1.1][lhcb_sim-run3-ma_pipelink] | ![ci][lhcb_sim-run3-ma_pipeline]|              5.4G              |
-| mg5amc | [madgraph4gpu-2022][mg5amc_madgraph4gpu-2022_code] | [click for link][mg5amc_madgraph4gpu-2022_sif] | [click for link][mg5amc_madgraph4gpu-2022_img] | [ci-v0.10][mg5amc_madgraph4gpu-2022_pipelink] | ![ci][mg5amc_madgraph4gpu-2022_pipeline]|                      11G                      |
+| alice | [digi-reco-core-run3-ma][alice_digi-reco-core-run3-ma_code] | [click for link][alice_digi-reco-core-run3-ma_sif] | [click for link][alice_digi-reco-core-run3-ma_img] | [ci-v3.0][alice_digi-reco-core-run3-ma_pipelink] | ![ci][alice_digi-reco-core-run3-ma_pipeline]|   16G   |
+| atlas | [gen_sherpa-ma][atlas_gen_sherpa-ma_code] | [click for link][atlas_gen_sherpa-ma_sif] | [click for link][atlas_gen_sherpa-ma_img] | [v2.2][atlas_gen_sherpa-ma_pipelink] | ![ci][atlas_gen_sherpa-ma_pipeline]| 22G |
+| atlas | [reco_mt-ma][atlas_reco_mt-ma_code] | [click for link][atlas_reco_mt-ma_sif] | [click for link][atlas_reco_mt-ma_img] | [v2.3][atlas_reco_mt-ma_pipelink] | ![ci][atlas_reco_mt-ma_pipeline]|      22G      |
+| atlas | [sim_mt-ma][atlas_sim_mt-ma_code] | [click for link][atlas_sim_mt-ma_sif] | [click for link][atlas_sim_mt-ma_img] | [v2.1][atlas_sim_mt-ma_pipelink] | ![ci][atlas_sim_mt-ma_pipeline]|     20G     |
+| belle2 | [gen-sim-reco-ma][belle2_gen-sim-reco-ma_code] | [click for link][belle2_gen-sim-reco-ma_sif] | [click for link][belle2_gen-sim-reco-ma_img] | [v2.2][belle2_gen-sim-reco-ma_pipelink] | ![ci][belle2_gen-sim-reco-ma_pipeline]|                3.4G                |
+| cms | [digi-run3-ma][cms_digi-run3-ma_code] | [click for link][cms_digi-run3-ma_sif] | [click for link][cms_digi-run3-ma_img] | [v1.1][cms_digi-run3-ma_pipelink] | ![ci][cms_digi-run3-ma_pipeline]|             5.8G             |
+| cms | [gen-sim-run3-ma][cms_gen-sim-run3-ma_code] | [click for link][cms_gen-sim-run3-ma_sif] | [click for link][cms_gen-sim-run3-ma_img] | [v1.1][cms_gen-sim-run3-ma_pipelink] | ![ci][cms_gen-sim-run3-ma_pipeline]|                           6.2G                           |
+| cms | [hlt-ma][cms_hlt-ma_code] | [click for link][cms_hlt-ma_sif] | [click for link][cms_hlt-ma_img] | [v0.2][cms_hlt-ma_pipelink] | ![ci][cms_hlt-ma_pipeline]|                   19G                   |
+| cms | [mlpf][cms_mlpf_code] | [click for link][cms_mlpf_sif] | [click for link][cms_mlpf_img] | [v0.1][cms_mlpf_pipelink] | ![ci][cms_mlpf_pipeline]|                                                          |
+| cms | [reco-run3-ma][cms_reco-run3-ma_code] | [click for link][cms_reco-run3-ma_sif] | [click for link][cms_reco-run3-ma_img] | [v1.2][cms_reco-run3-ma_pipelink] | ![ci][cms_reco-run3-ma_pipeline]|              6.5G              |
+| hello | [world-c7-ma][hello_world-c7-ma_code] | [click for link][hello_world-c7-ma_sif] | [click for link][hello_world-c7-ma_img] | [v1.0][hello_world-c7-ma_pipelink] | ![ci][hello_world-c7-ma_pipeline]|      759M      |
+| hello | [world-cs8-ma][hello_world-cs8-ma_code] | [click for link][hello_world-cs8-ma_sif] | [click for link][hello_world-cs8-ma_img] | [ci-v1.0][hello_world-cs8-ma_pipelink] | ![ci][hello_world-cs8-ma_pipeline]|                 518M                 |
+| igwn | [pe][igwn_pe_code] | [click for link][igwn_pe_sif] | [click for link][igwn_pe_img] | [v0.5][igwn_pe_pipelink] | ![ci][igwn_pe_pipeline]|        2.9G        |
+| juno | [gen-sim-reco][juno_gen-sim-reco_code] | [click for link][juno_gen-sim-reco_sif] | [click for link][juno_gen-sim-reco_img] | [v3.1][juno_gen-sim-reco_pipelink] | ![ci][juno_gen-sim-reco_pipeline]|   3.3G   |
+| lhcb | [sim-run3-ma][lhcb_sim-run3-ma_code] | [click for link][lhcb_sim-run3-ma_sif] | [click for link][lhcb_sim-run3-ma_img] | [v1.1][lhcb_sim-run3-ma_pipelink] | ![ci][lhcb_sim-run3-ma_pipeline]|               5.4G               |
+| mg5amc | [madgraph4gpu-2022][mg5amc_madgraph4gpu-2022_code] | [click for link][mg5amc_madgraph4gpu-2022_sif] | [click for link][mg5amc_madgraph4gpu-2022_img] | [ci-v0.10][mg5amc_madgraph4gpu-2022_pipelink] | ![ci][mg5amc_madgraph4gpu-2022_pipeline]|                       11G                       |
 
 [alice_digi-reco-core-run3-ma_code]: https://gitlab.cern.ch/hep-benchmarks/hep-workloads/-/blob/master/alice/digi-reco-core-run3-ma/alice-digi-reco-core-run3-ma
 [alice_digi-reco-core-run3-ma_sif]: https://gitlab.cern.ch/hep-benchmarks/hep-workloads-sif/container_registry/?search%5B%5D=alice-digi-reco-core-run3-ma-bmk
@@ -47,7 +47,7 @@ where:
 [atlas_gen_sherpa-ma_code]: https://gitlab.cern.ch/hep-benchmarks/hep-workloads/-/blob/master/atlas/gen_sherpa-ma/atlas-gen_sherpa-ma
 [atlas_gen_sherpa-ma_sif]: https://gitlab.cern.ch/hep-benchmarks/hep-workloads-sif/container_registry/?search%5B%5D=atlas-gen_sherpa-ma-bmk
 [atlas_gen_sherpa-ma_img]: https://gitlab.cern.ch/hep-benchmarks/hep-workloads/container_registry/?search%5B%5D=atlas-gen_sherpa-ma-bmk
-[atlas_gen_sherpa-ma_pipelink]: https://gitlab.cern.ch/hep-benchmarks/hep-workloads/-/pipelines/7132048
+[atlas_gen_sherpa-ma_pipelink]: https://gitlab.cern.ch/hep-benchmarks/hep-workloads/-/pipelines/7286313
 [atlas_gen_sherpa-ma_pipeline]: https://gitlab.cern.ch/hep-benchmarks/hep-workloads/badges/qa-build-atlas-gen_sherpa-ma/pipeline.svg
 
 [atlas_reco_mt-ma_code]: https://gitlab.cern.ch/hep-benchmarks/hep-workloads/-/blob/master/atlas/reco_mt-ma/atlas-reco_mt-ma
diff --git a/atlas/gen_sherpa-ma/CHANGELOG.md b/atlas/gen_sherpa-ma/CHANGELOG.md
index 8edd1070db140ce632d7e50ed74dcb75b531820c..ea0bfab5e3351172057dfc297aa259d24adc6fe6 100644
--- a/atlas/gen_sherpa-ma/CHANGELOG.md
+++ b/atlas/gen_sherpa-ma/CHANGELOG.md
@@ -1,6 +1,10 @@
 # Changelog for Atlas gen_sherpa MultiArchitecture (MA)
 
-## [Unreleased]
+## [v2.2] 2024-04-25
+- A new result parser script, written in python, has been added. The old parser calculated the score based on the walltime, 
+  which is dominated by initialization for small numbers of events. The new parser examines the timestamps in the log file to determine the beginning and end of the actual event loop. 
+- Because the timestamps have resolution of 1 second, a minimum number of events (50) is now required. If fewer than 50 events are requested, the workload fails.
+- The workload is single-threaded. Prior to this version, requests for multiple threads were silently ignored. Now, the workload will fail if the number of threads requested is not equal to one.
 
 ## [v2.1] 2023-11-10
 - Limit the number of loaded cores using the argument -n | --ncores 
diff --git a/atlas/gen_sherpa-ma/atlas-gen_sherpa-ma.spec b/atlas/gen_sherpa-ma/atlas-gen_sherpa-ma.spec
index b24bdab95e18b95cb2d74131ce67b17d4fa191ca..e040ba35e5c7dde56c2121866a7864cc84e57478 100644
--- a/atlas/gen_sherpa-ma/atlas-gen_sherpa-ma.spec
+++ b/atlas/gen_sherpa-ma/atlas-gen_sherpa-ma.spec
@@ -3,7 +3,7 @@ HEPWL_BMKOPTS="-e 50 -c1 -m none"
 HEPWL_BMKDIR=atlas-gen_sherpa-ma
 HEPWL_BMKDESCRIPTION="ATLAS Event Generation based on athena version 23.0.3"
 HEPWL_DOCKERIMAGENAME=atlas-gen_sherpa-ma-bmk
-HEPWL_DOCKERIMAGETAG=ci-v2.2
+HEPWL_DOCKERIMAGETAG=v2.2
 HEPWL_CVMFSREPOS=atlas.cern.ch,atlas-condb.cern.ch,sft.cern.ch
 HEPWL_EXTEND_SFT_SPEC=./sft_spec_custom.txt
 HEPWL_BMKOS="centos:centos7.9.2009"