diff --git a/nlp b/nlp
index 984751a..2b01f93 100755
--- a/nlp
+++ b/nlp
@@ -78,7 +78,7 @@ class NLPWorkflow(WorkflowRunner):
                 os.path.join(job["output_dir"], os.path.basename(job["path"]).rsplit(".", 1)[0] + ".vrt"),
                 self.lang
             )
-            nlp_jobs.append(self.addTask(label="nlp_job_-_%i" % (nlp_job_number), command=cmd, dependencies=mkdir_jobs, nCores=self.nCores, memMb=16384))
+            nlp_jobs.append(self.addTask(label="nlp_job_-_%i" % (nlp_job_number), command=cmd, dependencies=mkdir_jobs, nCores=min(4, self.nCores), memMb=15000))
 
 
 def analyze_jobs(inputDir, outputDir, level=1):
@@ -109,7 +109,7 @@ def main():
         args.nCores
     )
 
-    retval = wflow.run(nCores=args.nCores)
+    retval = wflow.run(nCores=args.nCores, memMb=30000)
     sys.exit(retval)