#57 SPI always 1 or less - or how is bcwp calculated?

[Julien Lamarche]

If I have a task that is performed ahead of time, the SPI is will 1.

The reason is that BCWP can't go over BCWS.

1. Create a new project with a start date a month earlier than current date

2. Create a task that starts before current date and ends after current date with the duration of 5 days

3. Assign it to a resource with a standard rate of 10 units per hour.

4. Costs should be 400

5. Save baseline

6. BCWS ends up being between 0 and 400

7. Set % done to 10%.

8. Observe SPI as you increment % done. SPI will start below 1 and gradually reach 1 where it will stop incrementing.

9. I would expect once it reaches 100% that the SPI would be above 1.

I've further discussed this in http://www.julienlamarche.ca/?p=973 and http://www.projectlibre.org/discussion/how-bcwp-calculated .