Force param_card update after running set?

Hi,

Thanks for the information.
I can see three solutions:

1) open the param_card for edition and then close it.
This is obviously not nice with scripting.

2) use the command "set width all Auto"
The problem of that one is that you can not change the result of the computation afterwards if needed.

3) apply the following patch

=== modified file 'madgraph/interface/common_run_interface.py'
--- madgraph/interface/common_run_interface.py 2018-05-25 09:13:24 +0000
+++ madgraph/interface/common_run_interface.py 2018-06-07 07:03:55 +0000
@@ -6143,6 +6143,12 @@

     def do_compute_widths(self, line):
         signal.alarm(0) # avoid timer if any
+
+ # ensure that the card is in sync
+ if 'param' in self.modified_card:
+ self.write_card('param')
+ self.modified_card.discard('param')
+
         path = self.paths['param']
         pattern = re.compile(r'''decay\s+(\+?\-?\d+)\s+auto(@NLO|)''',re.I)
         text = open(path).read()
@@ -6260,7 +6266,7 @@
             logger.info("add in the pythia8_card the parameter \"%s\" with value \"%s\"" % (name, value), '$MG:BOLD')
         elif len(args) > 0:
             if args[0] in self.cards:
- card = args[0]
+ card = args[0]
             elif "%s.dat" % args[0] in self.cards:
                 card = "%s.dat" % args[0]
             elif "%s_card.dat" % args[0] in self.cards:
@@ -6270,7 +6276,11 @@
             else:
                 logger.error("unknow card %s. Please retry." % args[0])
                 return
-
+ # ensure that the card is in sync
+ if card in self.modified_card:
+ self.write_card(card)
+ self.modified_card.discard(card)
+
             if card in self.paths:
                 path = self.paths[card]
             elif os.path.exists(card):
@@ -6434,6 +6444,12 @@
         """Running ASperGe"""
         signal.alarm(0) # avoid timer if any

+ # ensure that the card is in sync
+ if 'param' in self.modified_card:
+ self.write_card('param')
+ self.modified_card.discard('param')
+
+
         path = pjoin(self.me_dir,'bin','internal','ufomodel','ASperGE')
         if not os.path.exists(path):
             logger.error('ASperge has not been detected in the current model, therefore it will not be run.')

This patch will be included in the next version (but if it creates issue detected by our test suite)

Cheers,

Olivier

> On 6 Jun 2018, at 15:32, andlessa <email address hidden> wrote:
>
> New question #670019 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/670019
>
> Hi,
>
> I'm running generate_events, where I use "set [param] [value]" to change values in my param_card.
> After running set, I run compute_widths all [options] to get all the widths.
> However, I've noticed that compute_widths still uses the "old" param_card values.
> Is there an easy way to force an update of the param_card before running compute_widths?
> Here is a "toy" code snippet to reproduce the issue:
>
> ./generate_events
> 0 #Done with default options
> set mass 25 150 #Sets the Higgs mass to 150 (previous value was 125)
> compute_widths all #Re-compute widths, but uses mh = 125
> 0 #Run event generation . Events are generated with mh = 150
>
> Thanks.
>
> -Andre
>
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