diff --git a/.buildkite/longruns/pipeline.yml b/.buildkite/longruns/pipeline.yml
index a1c9cd8ab2..aec6781103 100644
--- a/.buildkite/longruns/pipeline.yml
+++ b/.buildkite/longruns/pipeline.yml
@@ -1,6 +1,5 @@
 agents:
   queue: central
-  slurm_mem: 20G
   slurm_time: 24:00:00
   modules: julia/1.9.3 cuda/12.2 ucx/1.14.1_cuda-12.2 openmpi/4.1.5_cuda-12.2 hdf5/1.12.2-ompi415 nsight-systems/2023.2.1
 
@@ -14,7 +13,6 @@ env:
 
   CONFIG_PATH: "config/longrun_configs"
   PERF_CONFIG_PATH: "config/perf_configs"
-
 timeout_in_minutes: 1440
 
 steps:
@@ -63,6 +61,7 @@ steps:
         agents:
           slurm_ntasks: 1
           slurm_time: 24:00:00
+          slurm_mem_per_cpu: 20G
 
 
       # DYAMOND AMIP: 1 day (convection resolving)
@@ -76,6 +75,7 @@ steps:
           BUILD_HISTORY_HANDLE: ""
         agents:
           slurm_time: 24:00:00
+          slurm_mem_per_cpu: 20G
 
       # mid-resolution AMIP: longrun (140 days)
       - label: "MPI AMIP FINE: target longrun"
@@ -88,6 +88,7 @@ steps:
         agents:
           slurm_ntasks: 32
           slurm_time: 24:00:00
+          slurm_mem_per_cpu: 20G
 
       # mid-resolution AMIP: MPI performance scaling (10 days)
       - label: "MPI AMIP FINE: n64"
@@ -101,6 +102,7 @@ steps:
           slurm_ntasks: 64
           slurm_time: 24:00:00
           slurm_tasks_per_node: 8
+          slurm_mem_per_cpu: 20G
 
       - label: "MPI AMIP FINE: n32"
         key: "mpi_amip_fine_n32"
@@ -113,6 +115,7 @@ steps:
           slurm_ntasks: 32
           slurm_time: 24:00:00
           slurm_tasks_per_node: 8
+          slurm_mem_per_cpu: 20G
 
       - label: "MPI AMIP FINE: n8"
         key: "mpi_amip_fine_n8"
@@ -125,6 +128,7 @@ steps:
           slurm_ntasks: 8
           slurm_time: 24:00:00
           slurm_tasks_per_node: 8
+          slurm_mem_per_cpu: 20G
 
       - label: "MPI AMIP FINE: n2" # 10d take 21h, so reducing to 1d
         key: "mpi_amip_fine_n2"
@@ -137,6 +141,7 @@ steps:
           slurm_ntasks: 2
           slurm_time: 24:00:00
           slurm_tasks_per_node: 2
+          slurm_mem_per_cpu: 20G
 
       - label: "MPI AMIP FINE: n1" # also reported by longruns with a flame graph; 10d take 21h, so reducing to 1d
         key: "mpi_amip_fine_n1"
@@ -147,6 +152,7 @@ steps:
         agents:
           slurm_ntasks: 1
           slurm_time: 24:00:00
+          slurm_mem_per_cpu: 20G
 
       - label: "MPI AMIP FINE: n1 no couple" # sim time = Δt_cpl (~ benchmarking with standalone models)
         key: "mpi_amip_fine_n1_nocouple"
@@ -157,6 +163,7 @@ steps:
         agents:
           slurm_ntasks: 1
           slurm_time: 24:00:00
+          slurm_mem_per_cpu: 20G
 
       # mpi_amip_fine_n1 flame graph report (NB: arguments passed from the ci pipeline.yml)
       - label: ":rocket: performance: flame graph diff: perf_target_amip_n1_shortrun"
@@ -165,6 +172,7 @@ steps:
         agents:
           slurm_ntasks: 1
           slurm_time: 24:00:00
+          slurm_mem_per_cpu: 20G
 
       - wait