How changes in Std.Rate of Enterprise resource affect all projects

[Hung]

Hi,

We started using projects with a list of resources in enterprise resource
pool, with Cost perhour set initially to 100$/hour.

After few months of working, we saw that it would be better to change it to
$1/hour so that the number can reflect immediately the number of hours.

How this change today affects the existing value of ACWP and BCWP/BCWS which
got some values already during the last few months?
I saw that these values started to get confused values.

Can we do something to ask MSP to recalculate the time-based values so that
everything could be as if it were 1$/h since the beginning?

Thanks

 

[NZ Projects]

I don't see why you want to use cost per hour to track work when there's a
perfectly suitable method of tracking actual work regardless of cost !

Is there a reason you cant use actual work ?

 

[Hung]

Hi NZ Projects,

The reason why I use cost per hour is to use the value of ACWP and BCWP/BCWS
(and their indices) in tracking if we are late to schedule or if we are
extending work from last week.

I don't know which method you meant for perfectly suitable method of
tracking actual work. I guess that you are talking of the Work data. You can
explain more on this.

Thanks

 

[Crook]

Hello Hung,

The indices, SPI, CPI, TCPI, etc., are unitless measures of cost and
schedule. The actual rate paid to people working on the project is not
germane to the indices' performance. You can safely leave your enterprise
rates at $100/h and have accurate measures. SPI (schedule performance
index) will be especially useful for you. Project help explains more.

HTH,
Crook

 

[Hung]

Thank you, I got that.

Hello Hung,

The indices, SPI, CPI, TCPI, etc., are unitless measures of cost and
schedule. The actual rate paid to people working on the project is not
germane to the indices' performance. You can safely leave your enterprise
rates at $100/h and have accurate measures. SPI (schedule performance
index) will be especially useful for you. Project help explains more.

HTH,
Crook

 

[Hung]

BTW,

What is the difference between TCPI and CPI?
I saw that in my project, sometimes, TCPI >1 while CPI < 1
Getting help on TCPI led me to CPI help, so there is no explanation about
the difference. Any hint on this is appreciated

Thanks

 

[davebush]

Hung,
CPI (Cost Performacne Index) indicates cost effenciency; is the
project over, under or on budget. For instance a CPI of .95 means the
project is 5% over budget. A CPI of 1.05 means we are 5% under budget.

TCPI (To Complete Performance Index) is the efficiency needed to
achieve an EAC (Estimate at Completion). The formula, taken from the
Defense Acquisition University, is:
TCPI = ( BAC - BCWP) / (EAC - ACWP).

I have heard TCPI described as an indicator of productivity. A TCPI of
1.2 means we need to be 20% more productive than we have been in order
to compete at the target EAC.

Hope that helps,
Dave Bush

 

[Hung]

I see, somehow this should be documented in Help file, since they are very
different.

Thank you so much for the explaination.

Hung

 

[Hung]

Hi

When I look into TCPI in one of my project, I saw that several lines got a
very big number 4294967295

I then show all the Baseline Cost, ACWS, BCWP, BCWS to see what made that
big numbers. But could not see any hint. All of these numbers are equal and
seem to be normal values

Is there anyone who see the same for TCPI ?

Thanks

 

[Alistair Blake]

Hung

interesting, I have just seen the same value in a EPM 2003 project I was looking at because it's costs were not being pushed into the cube correctly.
I found that some tasks had a BCWP of 0 and in our case they all had zero duration but the milestone flag was UNSET (Task Information dialog> Advanced tab > bottom left hand corner tick box). I set the milestone flag and the TCPI and BCWP values sorted themselves out instantly.
Now to see if that fixes the cube building problem .......

rgds
AL

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