diff --git a/sciunit2/command/checkout.py b/sciunit2/command/checkout.py
index 31269d6..5176dcd 100644
--- a/sciunit2/command/checkout.py
+++ b/sciunit2/command/checkout.py
@@ -1,7 +1,7 @@
 from __future__ import absolute_import
 
 from sciunit2.command import AbstractCommand
-from sciunit2.command.context import CheckoutContext
+from sciunit2.command.context import CheckoutContext_Parallel
 from sciunit2.exceptions import CommandLineError
 from sciunit2.util import quoted_format
 import sciunit2.core
@@ -22,7 +22,7 @@ def run(self, args):
         optlist, args = getopt(args, '')
         if len(args) != 1:
             raise CommandLineError
-        with CheckoutContext(args[0]) as (pkgdir, _):
+        with CheckoutContext_Parallel(args[0]) as (pkgdir, _):
             return pkgdir
 
     def note(self, project_dir):
diff --git a/sciunit2/command/context.py b/sciunit2/command/context.py
index 5e16891..22eb65f 100644
--- a/sciunit2/command/context.py
+++ b/sciunit2/command/context.py
@@ -18,6 +18,18 @@ def CheckoutContext(rev):
         repo.checkout(rev)
         yield pkgdir, orig
 
+# returns the pkgdir and original command used
+# to execute execution 'rev'
+@contextmanager
+def CheckoutContext_Parallel(rev):
+    emgr, repo = sciunit2.workspace.current()
+    with emgr.exclusive():
+        orig = emgr.get(rev).cmd
+        pkgdir = os.path.join(repo.location,rev,'cde-package')
+        repo.cleanup(pkgdir)
+        repo.checkout_Parallel(rev)
+        yield pkgdir, orig
+
 
 @contextmanager
 def CheckoutContext_Diff(rev):
diff --git a/sciunit2/command/repeat.py b/sciunit2/command/repeat.py
index f79e04c..fdd69bb 100644
--- a/sciunit2/command/repeat.py
+++ b/sciunit2/command/repeat.py
@@ -1,7 +1,7 @@
 from __future__ import absolute_import
 
 from sciunit2.command import AbstractCommand
-from sciunit2.command.context import CheckoutContext
+from sciunit2.command.context import CheckoutContext_Parallel
 from sciunit2.exceptions import CommandLineError
 import sciunit2.core
 
@@ -21,5 +21,5 @@ def run(self, args):
         optlist, args = getopt(args, '')
         if not args:
             raise CommandLineError
-        with CheckoutContext(args[0]) as (pkgdir, orig):
+        with CheckoutContext_Parallel(args[0]) as (pkgdir, orig):
             sys.exit(sciunit2.core.repeat(pkgdir, orig, args[1:]))
diff --git a/sciunit2/version_control.py b/sciunit2/version_control.py
index 91a3ab7..a88c8b7 100644
--- a/sciunit2/version_control.py
+++ b/sciunit2/version_control.py
@@ -56,6 +56,21 @@ def checkout(self, rev):
             raise CommandError('execution %r not found' % rev
                                if not self.__found(rev) else err)
 
+    # brings out the execution identified by 'rev'
+    # from the de-duplication engine
+    def checkout_Parallel(self, rev):
+        rev_repo = os.path.join(self.location, rev)
+        self._mkdir_p(rev_repo)
+        self.cleanup(os.path.join(rev_repo, 'cde-package'))
+        cmd = quoted_format('{0} checkout {1} - | tar xf - -C {2}',
+                            sciunit2.libexec.vv.which, rev, rev_repo)
+        p = subprocess.Popen(cmd, shell=True, cwd=self.location, stderr=PIPE)
+        _, err = p.communicate()
+        print("hi in checkout parallel"+cmd)
+        if p.wait() != 0:
+            raise CommandError('execution %r not found' % rev
+                               if not self.__found(rev) else err)
+
     def checkout_Diff(self, rev):
         cmd = quoted_format('{0} checkout {1} - | tar xf -',
                             sciunit2.libexec.vv.which, rev)