[MacPorts] #28757: atlas takes a long time to compile

[MacPorts]

#28757: atlas takes a long time to compile
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 Reporter:  sorin.sbarnea@…          |       Owner:  jameskyle@…           
     Type:  defect                   |      Status:  new                   
 Priority:  Normal                   |   Milestone:                        
Component:  ports                    |     Version:  1.9.2                 
 Keywords:                           |        Port:  atlas                 
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Comment(by ryandesign@…):

 Replying to [comment:3 sorin.sbarnea@…]:
 > I did not expect to have to wait such a long time with a new computer.

 Much of the speed of your new computer comes from it having multiple
 processor cores. For most ports, this helps them build faster. MacPorts
 starts multiple make jobs -- the number of jobs is the number of virtual
 cores, or the number of GB of RAM, whichever is fewer. You have 4 physical
 cores hyperthreaded to 8 virtual cores, and 8 GB of RAM, so MacPorts will
 start 8 make jobs -- for ports that support it. Unfortunately the atlas
 port was found to not build correctly with parallel building, so parallel
 building was turned off for atlas, so it will not benefit from all these
 cores you have available.

 You mentioned gcc45 as well. That is also a large port that will take time
 to build. Fortunately parallel building works fine for gcc45, and yet, not
 all of a software's build tasks can be done in parallel, so not all 8
 virtual cores will be busy all of the time.

 Replying to [comment:5 macsforever2000@…]:
 > Use the -v flag for verbose output.

 As in: `sudo port -v install atlas`

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Ticket URL: <https://trac.macports.org/ticket/28757#comment:6>
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