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Date/Time: Tue, 27 Oct 2020 20:02:58 +0000



Issues Switching from Simulation to Live

[2020-10-09 12:53:15]
User94606 - Posts: 281 | Ending Date: 2021-10-30
I am currently running version 2177 and noticed that when I switched from simulation trading to live or vice-versa, Sierra Chart freezes for 3 or 4 minutes. I did not have any issues in the past prior to upgrading to 2177.
[2020-10-09 20:58:09]
Sierra Chart Engineering - Posts: 90742 | Ending Date: 2021-04-05
This is occurring due to study recalculations. Refer to:
https://www.sierrachart.com/index.php?page=doc/helpdetails30.html#InefficientAdvancedCustomStudies

This is not an issue specific to 2177 unless somehow there is one study which is less efficient but there are no known changes to cause an issue.
Sierra Chart Support - Engineering Level

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If your question/request has been answered and you do not have anything further, then it is easiest for us if you do not reply again to say thank you.
[2020-10-17 13:38:10]
User94606 - Posts: 281 | Ending Date: 2021-10-30
I am using the VWAP - Rolling study for 2, 3, 5, 7 and 30 days on a 1 min chart. The calculation time is very high - see screenshot. What do you recommend to reduce the calculation time? On a 15-min chart the calculation time is significantly better - the highest is 836 ms for the 30 days.
imageVWAP - Rolling.jpg / V - Attached On 2020-10-17 13:37:56 UTC - Size: 141.37 KB - 13 views
[2020-10-18 10:54:11]
Sierra Chart Engineering - Posts: 90742 | Ending Date: 2021-04-05
Use a sub instance for the charts which use those studies:
https://www.sierrachart.com/index.php?page=doc/NewInstance.php
Sierra Chart Support - Engineering Level

Your definitive source for support. Other responses are from users. If possible please keep your questions brief and to the point. Please be aware of support policy:
https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation

If your question/request has been answered and you do not have anything further, then it is easiest for us if you do not reply again to say thank you.
[2020-10-18 18:16:55]
User216714 - Posts: 70 | Ending Date: 2020-10-31
Use a sub instance for the charts which use those studies:

Could you explain why it is a good idea in this case? Thanks
[2020-10-19 15:04:14]
Sierra Chart Engineering - Posts: 90742 | Ending Date: 2021-04-05
This is explained here:
https://www.sierrachart.com/index.php?page=doc/Trading.html#SierraChartConfigurationForMostLowResponseTimeTrading

You would use the sub instance only for charting and it would remain in Trade Simulation Mode and you will not need to change that setting causing unnecessary recalculations.
Sierra Chart Support - Engineering Level

Your definitive source for support. Other responses are from users. If possible please keep your questions brief and to the point. Please be aware of support policy:
https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation

If your question/request has been answered and you do not have anything further, then it is easiest for us if you do not reply again to say thank you.
[2020-10-20 01:05:22]
User94606 - Posts: 281 | Ending Date: 2021-10-30
I want to share data using the sub instance option. I read the steps 1 thru 6 from https://www.sierrachart.com/index.php?page=doc/NewInstance.php, but I am not clear once I create a new instance, how do I share the studies on the chart from the sub instance. Can you please provide more details or reference?
Date Time Of Last Edit: 2020-10-20 03:26:03
[2020-10-20 03:27:57]
Sierra Chart Engineering - Posts: 90742 | Ending Date: 2021-04-05
Follow the instructions here:
https://www.sierrachart.com/index.php?page=doc/NewInstance.php#InstructionsForSharingDataUsingSubInstances

how do I share the studies on the chart from the sub instance.
We need more details as to exactly what you want to do.
Sierra Chart Support - Engineering Level

Your definitive source for support. Other responses are from users. If possible please keep your questions brief and to the point. Please be aware of support policy:
https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation

If your question/request has been answered and you do not have anything further, then it is easiest for us if you do not reply again to say thank you.
[2020-10-20 03:38:06]
User94606 - Posts: 281 | Ending Date: 2021-10-30
I want to use the Volume Weighted Average Price - Rolling study for 2, 3, 5, 7, and 30 days in the sub instance and share these calculations in the main instance.

Let me ask you a separate question. I initially had these calculations in the main instance on a 1 min chart and the calculations were taking a very long time. I have the same calculations already available in a 15 minute chart on the main instance. Is there a way to share the data already available in the main instance with another chart on the same chartbook?
Date Time Of Last Edit: 2020-10-20 03:50:04

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