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Date/Time: Tue, 17 Sep 2019 09:25:38 +0000



[Sticky] - OpenGL support Now Ready for Initial Testing

[2019-07-12 01:03:21]
Sierra Chart Engineering - Posts: 76297
Prerelease version 1947 of Sierra Chart has support for OpenGL:
https://en.wikipedia.org/wiki/OpenGL

The basic objective of OpenGL is to transfer the rendering of graphics from the CPU to the GPU to reduce CPU usage.

The greatest reduction in CPU usage is going to come from systems that have a capable and fast GPU:
https://en.wikipedia.org/wiki/Graphics_processing_unit

This option can be enabled through Global Settings >> Graphics Settings >> Other. Once you enable the option for OpenGL, a restart of Sierra Chart is needed and Sierra Chart stays in that mode until the option is disabled and is restarted again.

OpenGL support is very much a beta. There can be stability and rendering issues. For example, the Chart Values tool does not function properly. OpenGL does not have support for text so we had to create an alternative to do text. So text is not necessarily going to render in a way you might like.

Once again this is considered a beta and problems can be expected. We do not recommend using OpenGL during live trading.

Report any issues in this thread but we will not necessarily respond. There is no need to go into extensive detail. And if it issue has been reported, then do not report it again. We do not want to be flooded with all kinds of issues. And once again we will not necessarily respond.

If you are using Linux and you have problems, then please at this time do not post those issues here. Our first objective is to have stability on Windows.
Sierra Chart Support - Engineering Level

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Date Time Of Last Edit: 2019-09-07 12:56:37
[2019-07-12 06:14:00]
User907968 - Posts: 112
Hi support, a few observations -

- Transparency is inverted for drawing tools and chart drawstyles - i.e. 100% = fully opaque and 0% = fully transparent

- Circle drawstyles produce very coarse polygons, rather then circles

- Chart drawing tools fill behaviour is inconsistent, both in color selection and whether the shape actually fills

- Chart drawing tools cause large CPU spike and are not very responsive

- When scrolling charts that have circle drawstyles, there is very noticeable screen tearing


Not all negative feedback though - render time for 'Market Depth Historical Chart' is massively reduced, which is great!
[2019-07-13 02:16:22]
hurleydood - Posts: 15
Yes the font look like pixelated bitmaps.
You can render nice clean TrueType fonts using FreeType which is popular on non-Windows systems.
https://learnopengl.com/In-Practice/Text-Rendering
[2019-07-13 02:37:23]
user8888 - Posts: 92
yes, beta.
after 1 min of moving the mouse around the chartbook across the screens, with the opengl option enabled, all 3 screens went black.
unrecoverable. physical button need it to restart the system.
2 1st screens to internal gpu, the 3rd to secondary gpu.
[2019-07-13 03:49:14]
Sierra Chart Engineering - Posts: 76297
Regarding post #4, this sounds driver related to us.
Sierra Chart Support - Engineering Level

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[2019-07-13 03:58:24]
user8888 - Posts: 92
yes, and to me aswell. but the drivers are up to date. thank you anyway.
[2019-07-13 13:06:51]
mpro - Posts: 24
When using Numbers Bars with "Highlight Volume/VPOC" or "Candle Stick Outline". There is a black box in the foreground. Regardless of the color settings.

V1948
Date Time Of Last Edit: 2019-07-13 13:15:34
imageNumbersBars_OpenGL_Bug.png / V - Attached On 2019-07-13 13:02:18 UTC - Size: 73 KB - 185 views
[2019-07-13 20:53:25]
Sierra Chart Engineering - Posts: 76297
Regarding post #4 and #6, we will try to duplicate this set up and see what the problem is. Regarding post #6, how many monitors do you have?
Sierra Chart Support - Engineering Level

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Date Time Of Last Edit: 2019-07-13 20:53:42
[2019-07-15 07:10:48]
Sierra Chart Engineering - Posts: 76297
Regarding post #4 and post #6 where the screens went black, can you provide us the following information:
1. What are the exact models of video cards, amount of monitors in the system, and screen resolutions?
2. What version of Windows is being used? Screenshot of system information would be good.
3. Does the issue appear with some specific chartbook(s)?
4. Can you download, install, and take screenshots from the tabs "Graphics card" and "Advanced" in software:
https://www.techpowerup.com/gpuz/
4.1 Can you take screenshots of the tab "Sensors" from GPU-Z when you run SC?
Sierra Chart Support - Engineering Level

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Date Time Of Last Edit: 2019-07-15 07:11:30
[2019-07-15 14:43:51]
user8888 - Posts: 92
yes, sir, I can provide you with all that.

However, you might be quite right when saying that sounds like a driver problem, because my video driver crashes from time to time.

But, crashes, alters the resolution of 1 or 2 screens, and I can recover it, revert back the resolutions and continue normally.

The beta OpenGL option of your software seems to increase the problem, leaving the system unrecoverable. But the problem is there before the OpenGL option.

So, thank you very much for your efforts, but might be my system.

I've updated the drivers, even tried with previous versions, but same result.

If you still want that info, let me know... But I should have the driver problem fixed before being able to evaluate properly the OpenGL way (which is not gonna happen soon because I've tried everything I know already)

The system is a win server 2012 R2 and the secondary GPU is based on a ATI chipset. 2 of the 3 screens are UHD.


Thank you very much.
[2019-07-16 09:25:58]
Sierra Chart Engineering - Posts: 76297
Therefore lets set aside the request for the time being.
Sierra Chart Support - Engineering Level

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[2019-07-16 21:47:28]
User929084 - Posts: 41
Hi. Just downloaded V 1951 to see the difference of OpenGL. Here's what I notice

1. No visible crosshair, even though it is enabled. It will appear for fraction of a second when moving mouse around.

2. None on the keyboard shortcuts work. I checked in global settings and they are the same as before, just don't work.

3. Tearing of price and time scales on all charts when moving mouse around. First img is the chart where I have pointer on ( tearing ) and second img is second chart ( tearing1 ), and it's even worse then the first one. I have Global Cursor on.
imagetearing.png / V - Attached On 2019-07-16 21:47:12 UTC - Size: 41 KB - 139 views
imagetearing.1.png / V - Attached On 2019-07-16 21:47:18 UTC - Size: 42.93 KB - 129 views
[2019-07-17 09:28:20]
User138602 - Posts: 126
The visibility of the crosshair was always this troublesome. Even before the implementation of opengl. Couldnt find a solution in any of the crosshair related settings and there arent that many as far as i know.

@SC It would be nice if you could give us an always easy to find crosshair option...just thicker crosshair lines may work. Yes, there are workarounds like pressing CONTROL button on the keyboard in combination with the right mouse setting in windows. But its still not convinient or optimal.

I would like to have the crosshair as my default pointer because i could compare quickly a pricelevel in different timeframes. But not knowing where i am on the whole screen lets me always switch back to the default arrow pointer. The crosshair is just not visible enough or not visible at all.
Date Time Of Last Edit: 2019-07-17 09:37:19
[2019-07-17 13:20:01]
User929084 - Posts: 41
I only brought this up because without OpenGL enabled I never had a crosshair problem. It is always visible and tracks time and price like it should on all charts. Sometimes it will disappear from one of the charts, but all I have to do is just move my mouse over to that chart and it comes back.
[2019-07-17 19:32:42]
Sierra Chart Engineering - Posts: 76297
This is said in Post #1:
For example, the Chart Values tool does not function properly.

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[2019-07-17 19:34:04]
Sierra Chart Engineering - Posts: 76297
The crosshair is just not visible enough or not visible at all.
If you have a problem it is because you are not using the right settings based on the chart background color you are using and your screen resolution.

The visibility of the Chart Value/Crosshair tool has never been an issue. You can adjust the colors, the Line style and thickness. Refer to:
https://www.sierrachart.com/index.php?page=doc/Tools.html#ChartValues_ToolConfiguration
Sierra Chart Support - Engineering Level

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Date Time Of Last Edit: 2019-07-17 19:34:48
[2019-07-17 20:58:19]
User138602 - Posts: 126
I HATE to capture this thread...sry, its about opengl and NOT crosshair.

But just to be on the same page: I am not talking about the horizontal and vertical lines extending to the edges of a chart window. I am only refering to the little cross in the center. My comment is kinda off-topic, i must admit.

Nevertheless, are we still talking about the same thing and i am able to even modify the center cross?
[2019-07-17 21:01:09]
Sierra Chart Engineering - Posts: 76297
But that particular object is something you can control in the Pointer settings through the operating system control panel. It is not set by Sierra Chart. You should be able to choose a larger one and one with a greater contrast.
Sierra Chart Support - Engineering Level

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Date Time Of Last Edit: 2019-07-17 21:01:36
[2019-07-17 22:11:31]
User138602 - Posts: 126
Changing the pointer color did the trick. The arrow mouse pointer is black now but the crosshair gets a white outline.
Its a compromise...thx.
Date Time Of Last Edit: 2019-07-17 22:13:55
[2019-07-18 17:56:43]
HinckleyBob - Posts: 28
I am assuming this problem is associated with this Beta software: Attached file shows:
1. The range of the rectangle fill is incomplete.
2. The ragged right edge of the rectangle fill.
3. The artifact of a semi-opaque vertical edge price scale, not fully vertical.

This is always reproducible.

A system information file is available at http://speccy.piriform.com/results/z5MmaP6NAn8kfe8ilHioyxA

Update: I turned off the OpenGL option, and was able to reproduce the problem. So this message is posted to the wrong thread. Sorry, haven't had this problem before.
Date Time Of Last Edit: 2019-07-18 18:08:43
attachment2019-07-18_13-47-23.pdf - Attached On 2019-07-18 17:54:02 UTC - Size: 114.12 KB - 61 views
[2019-07-19 19:37:41]
Sierra Chart Engineering - Posts: 76297
Update: I turned off the OpenGL option, and was able to reproduce the problem. So this message is posted to the wrong thread. Sorry, haven't had this problem before.
You need to restart Sierra Chart after disabling the OpenGL option. If you still have the problem after restarting and not using OpenGL, then post that particular chart following these instructions but only if you are not using OpenGL:
https://www.sierrachart.com/index.php?page=doc/PostingInformation.php#ProvidingChartbookSingleChart
Sierra Chart Support - Engineering Level

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Date Time Of Last Edit: 2019-07-19 19:38:11
[2019-07-21 13:18:47]
mpro - Posts: 24
I get a crosshair with OpenGL only when the chart is updating. So without datafeed there is no crosshair.

https://youtu.be/EuuPWCsdZHM

1953
[2019-07-21 21:08:42]
Sierra Chart Engineering - Posts: 76297
There is a known issue with the Chart Values tool. This will be resolved.
Sierra Chart Support - Engineering Level

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[2019-07-24 05:32:35]
jackflash - Posts: 242
When using 'Study Subgraphs Reference with 'Transparent Fill Rectangle Top/Bottom' the fill occasionally works on a chart but mostly not. This might be the case for other transparent Draw styles and may not be limited to Study Subgraphs Reference but i've not tested them. Also, I think this may be related to CFD's as it works as expected with Futures. See attached chartbook

Also when using the 'Colour Bar based on Alert Condition' with 'Color Bar Hollow' draw style, the fill of the bar is always black even if there is a 'Color Bar Candle Fill' which is triggered
Date Time Of Last Edit: 2019-08-02 02:36:15
attachmentERROR - Study Subgraphs Reference.Cht - Attached On 2019-07-24 05:31:39 UTC - Size: 50.85 KB - 21 views
[2019-07-25 07:30:53]
jackflash - Posts: 242
When different color transparencies overlap, sometimes the combined color is just one of the colours. For example when green and red overlap, instead of orange the color would be red or green

However what works fine is when same transparent colors overlap and they create a more opaque version of that color
Date Time Of Last Edit: 2019-07-25 09:09:00
[2019-07-29 20:01:00]
User871277 - Posts: 20
Moving mouse marks somehow everything on the right, e.g. price of asset, values of indicators etc.

Click in chart region with crosshair, move mouse, -> marks the right of the screen, marks disappear with left click.

Current Version: 1957 (July 23, 2019)
Date Time Of Last Edit: 2019-07-29 20:04:24
Attachment Deleted.
[2019-07-30 00:54:47]
Sierra Chart Engineering - Posts: 76297
In regards to post #26, this is already a known issue.
Sierra Chart Support - Engineering Level

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[2019-08-11 22:15:55]
Bedhog - Posts: 139
Using Win10 w/Radeon WX5100... enabled OpenGL. The fonts were different/difficult to read and appeared to be sluggish drawing charts. Disabled OpenGL.
[2019-08-11 22:46:15]
Sierra Chart Engineering - Posts: 76297
Make sure you are running the current version of Sierra Chart. Instructions to update:
https://www.sierrachart.com/index.php?page=doc/SoftwareDownload.php#FastUpdate
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:
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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.
[2019-08-12 03:40:33]
User735389 - Posts: 126
are there any known issue with nvidia cards, or optimus? Or some min spec for the graphics card? settings tweaks? Usage limits in terms of how many charts it can run?

I have an nvidia 1050m 2gb. Even with just one chart (sized at about 1080p) there's an unuable amount of lag when i'm forcing it to use the nvidia card. Oddly i see both the integrated intel and nvidia gpu usage spike when i'm doing anything to the chart (like scrolling around). When using the integrated intel card only, the system is more responsive, which is very odd. Could be a configuration thing but i have no idea what it would be.

Performance chokes pretty fast with additional charts. When I run 1 of my normal chartbooks (which as about 8 normal charts, 1 blank chart, 1 detached chart, all fitted on a 4k monitor) the intel card is maxed at 100% when idle. I'm usually running 27 of these chartbooks at a time, which runs great non-opengl.

All the settings in the nvidia control panel are set to off or optimized for performance
Date Time Of Last Edit: 2019-08-12 03:40:59
[2019-08-12 15:38:08]
Sierra Chart Engineering - Posts: 76297
In regards to post #30, is this when using the new OpenGL option and you have restarted Sierra Chart?
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[2019-08-12 16:08:32]
User735389 - Posts: 126
yes im restarting SC everytime i toggle the setting (as indicated with the popup)
[2019-08-12 16:14:38]
User316362 - Posts: 103
Just a Data Point....looks good here.

I have an AMD Ryzen 7 2700x processors and an Nvidia Geforce GTX 1660 Ti graphics card with two large monitors.
I have two chart books open and a large number of charts in each plus spreadsheets.


Without OpenGL processors utilization are:

CPU=3%
GPU=9-10% (very Stable)

With OpenGL utilizations are:

CPU = 3%
GPU = 10%-25% varying

Looks like work is successfully using GPU for rendering.

No issues noticed at all so far.
[2019-08-13 15:31:37]
User316362 - Posts: 103
I did find one issue. The "Right Edge (centered) " Value label will not show when OpenGL is turned on in the studies in the lower chart regions. (version 1971).
The "centered" and "above" etc seems to be having issues also.

Works fine without OpenGL
Date Time Of Last Edit: 2019-08-13 15:48:38
[2019-08-16 15:48:42]
User316362 - Posts: 103
Should OpenGL issues be posted here (like post 34)? Are the issues being logged for the developers? There are a few threads on OpenGL and one place to follow along with would be good. I'm very impressed with the performance BTW. The Chart update times have dropped over 10 fold on my computer. most charts say 1ms update, amazing.
[2019-08-16 17:05:10]
Tooth Fairy - Posts: 11
Draw DOM Graph on chart (adv setting 2) didn't draw volume #.
[2019-08-16 17:21:24]
Sierra Chart Engineering - Posts: 76297
Yes post any issues here but in many cases we will not respond. We are monitoring the thread. This feature is still considered a beta.
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:
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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.
[2019-08-16 19:18:02]
Sierra Chart Engineering - Posts: 76297
Regarding post #30 above:
1. Screenshot of Sensors tab in GPU-Z app when the problem appears and first tab on idle.
2. Attached Chartbook. Perhaps there is some specific settings for studies/chart
3. how many displays do you have?

Also the user may try to reduce screen resolution to 1600x900 or even to 1280x720 to reduce usage of video RAM.
If you need help with GPU Z let us know.
Sierra Chart Support - Engineering Level

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Date Time Of Last Edit: 2019-08-16 19:18:18
[2019-08-17 00:46:14]
g0ldar - Posts: 17
Certain text isn't showing on screen. For instance, I cannot see the DOM quantities when Draw DOM Graph on Chart is enabled. I also cannot see the number box in bottom right hand corner that tells you bar spacing.

I am also getting laggy user interface when moving charts around or scaling charts using NVIDIA GTX 1060. I don't experience any of this when using the integrated Intel graphics card. The NVIDIA card gives much faster chart drawing times though.
Date Time Of Last Edit: 2019-08-17 01:09:00
[2019-09-04 13:43:16]
jackflash - Posts: 242
latest opengl updates have worked nicely on chart drawings and transparencies mostly, but I'm getting some new issues after charts have been running for some time. Drawings or studies using transparency with set colours like blue/red etc, the colour changes to black and they are not clearly visible any longer. This happens on some charts in the chartbook, not sure if it only affects some charts or all

Also sometimes a chart will just go black completely and nothing is on it at all, just black background. No bars/text/anything. I'm using 1984
[2019-09-04 14:04:02]
Tooth Fairy - Posts: 11
more details on #40 to help debugging: When the left coordinates are out of view for a certain duration, the color changed to black. Condensing the bars so the left coordinates becoming visible, the filled color changes back to the its original color.
[2019-09-04 20:25:11]
jackflash - Posts: 242
Chart Calculator after placing the first anchor the text is scambled until the second anchor is placed
[2019-09-05 16:13:39]
jackflash - Posts: 242
post #40. I just cut an extended rectangle on a non opengl instance and the same thing happened but only on the single extended rectangle, so maybe the issue is not opengl related
[2019-09-07 13:12:33]
Sierra Chart Engineering - Posts: 76297
Chart Calculator after placing the first anchor the text is scambled until the second anchor is placed
We are aware of this and this affects text on all drawing tools . We will fix this.
Sierra Chart Support - Engineering Level

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[2019-09-07 21:45:38]
User316362 - Posts: 103
Just curious, are OpenGL fixes being added incrementally with new Sierra versions or will they all come at once when announced?
[2019-09-08 04:16:26]
Sierra Chart Engineering - Posts: 76297
Yes they are added incrementally . You should always be running the latest version if using OpenGL.
Sierra Chart Support - Engineering Level

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Date Time Of Last Edit: 2019-09-08 04:58:31
[2019-09-08 10:04:12]
jackflash - Posts: 242
I've got 2 GPU's in my system, nvidia 980 GTX and an nvidia 1070 GTX. The default GPU is the 1070 which is about 1.3x more powerful than the 980. In the nvidia control panel I can select which GPU Sierra is assigned to for OpenGL and CUDA. If I leave it on the 1070 sierra runs great and the GPU load is about 33%. I tried to assign sierra to the 980 however (for CUDA and OpenGL) and it's unusable. The load on GPU varies every couple of seconds from 50-90% (in task manager) and makes the whole system sluggish (windows 10 latest). The difference in GPU load doesn't make sense as I would expect it to be around 50-60% max on the 980 given the difference in capabilities of the GPUs.

Not sure what's causing this. Maybe the 980 isn't supported yet or not optimised. Or maybe I'm not setting everything needed up to use the 980 correctly?

Are optimisations expected down the line? btw i'm running 1986
Date Time Of Last Edit: 2019-09-08 10:06:39
[2019-09-08 15:01:31]
User138602 - Posts: 126
i have a 980 myself....runs opengl active SC without obvious problems.
Date Time Of Last Edit: 2019-09-08 15:02:09
[2019-09-09 05:02:19]
Sierra Chart Engineering - Posts: 76297
Our initial thought about those users who are noticing performance issues with a particular GPU is as follows:

Do not tell the operating system what GPU Sierra Chart should be using. It needs to make that decision itself.

And a particular chart must not be contained in more than one display. If two or more displays a chart is contained within are driven by different GPUs, you would create a situation where there are inefficiencies because the operating system has to start transferring resulting output between video adapters.

It is not efficient to have GPU do the rendering, and then have this output transferred to another display which uses a different GPU.

The above statements still have to be technically confirmed by us, and are just at this point only a logical conclusion.

------
When changing which GPU Sierra Chart is assigned to, you do need to restart Sierra Chart so there is a re-initialization of OpenGL on the Sierra Chart side.
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:
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Date Time Of Last Edit: 2019-09-09 15:29:55
[2019-09-12 09:49:21]
User907968 - Posts: 112
Hi support,
Not a technical issue, more an observation when using openGL.

Personally I am now finding line width 1 to be not much use for anything other than solid lines.
The line is either bordering on being invisible (in the case of dotted line) or it's difficult to quickly distinguish between dashed, dash-dot & dash-dot-dot.

If don't know if other people see it the same, or maybe it's just me and I should invest in new glasses (or use wider lines).
[2019-09-12 11:04:42]
User907968 - Posts: 112
I observed some other strange behavior today when there are different coloured transparent rectangles drawn onto the chart.

- Sometimes the fill colour of one or more rectangle will change depending on the chart scroll position.

- Very occasionally, when switching chartbooks there is sometimes a faint/ghost image showing parts of the previous chart within the transparent fill area of one or more rectangles on the new chart.

edit: in regard to the comment about ghost image, having seen this occur a couple more times I can't say with any certainty what the source of the ghost image is. It may be from the previous chartbook or it may be from one of the charts behind current one (but in the same chartbook).
Date Time Of Last Edit: 2019-09-13 13:13:04
[2019-09-12 13:04:46]
Sierra Chart Engineering - Posts: 76297
In regards to post #50, post #51, please provide Chartbook for us to test.
Sierra Chart Support - Engineering Level

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Date Time Of Last Edit: 2019-09-12 13:05:04
[2019-09-12 13:40:01]
User907968 - Posts: 112
Ok, chartbook attached as requested.

I also attached a couple of images as an example of what I saw earlier, although not the same chartbook.
The rectangles in the images are added by a custom study, but I was able re-create the issue with manually added drawings also.

Let me know if you want anything else.
Private File
Private File
Private File
[2019-09-13 13:05:20]
jackflash - Posts: 242
Yeah still got issues with transparency and colour disappearing from rectangle/extended rectangle on 1987. Not sure what triggers it but seems to happen after i've been cutting rectangles or deleting drawings

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